mox/config/doc.go
Mechiel Lukkien 8096441f67
new feature: when delivering messages from the queue, make it possible to use a "transport"
the default transport is still just "direct delivery", where we connect to the
destination domain's MX servers.

other transports are:

- regular smtp without authentication, this is relaying to a smarthost.
- submission with authentication, e.g. to a third party email sending service.
- direct delivery, but with with connections going through a socks proxy. this
  can be helpful if your ip is blocked, you need to get email out, and you have
  another IP that isn't blocked.

keep in mind that for all of the above, appropriate SPF/DKIM settings have to
be configured. the "dnscheck" for a domain does a check for any SOCKS IP in the
SPF record. SPF for smtp/submission (ranges? includes?) and any DKIM
requirements cannot really be checked.

which transport is used can be configured through routes. routes can be set on
an account, a domain, or globally. the routes are evaluated in that order, with
the first match selecting the transport. these routes are evaluated for each
delivery attempt. common selection criteria are recipient domain and sender
domain, but also which delivery attempt this is. you could configured mox to
attempt sending through a 3rd party from the 4th attempt onwards.

routes and transports are optional. if no route matches, or an empty/zero
transport is selected, normal direct delivery is done.

we could already "submit" emails with 3rd party accounts with "sendmail". but
we now support more SASL authentication mechanisms with SMTP (not only PLAIN,
but also SCRAM-SHA-256, SCRAM-SHA-1 and CRAM-MD5), which sendmail now also
supports. sendmail will use the most secure mechanism supported by the server,
or the explicitly configured mechanism.

for issue #36 by dmikushin. also based on earlier discussion on hackernews.
2023-06-16 18:57:05 +02:00

1015 lines
39 KiB
Go

/*
Package config holds the configuration file definitions for mox.conf (Static)
and domains.conf (Dynamic).
These config files are in "sconf" format. Summarized: Indent with tabs, "#" as
first non-whitespace character makes the line a comment (you cannot have a line
with both a value and a comment), strings are not quoted/escaped and can never
span multiple lines. See https://pkg.go.dev/github.com/mjl-/sconf for details.
Annotated empty/default configuration files you could use as a starting point
for your mox.conf and domains.conf, as generated by "mox config
describe-static" and "mox config describe-domains":
# mox.conf
# Directory where all data is stored, e.g. queue, accounts and messages, ACME TLS
# certs/keys. If this is a relative path, it is relative to the directory of
# mox.conf.
DataDir:
# Default log level, one of: error, info, debug, trace, traceauth, tracedata.
# Trace logs SMTP and IMAP protocol transcripts, with traceauth also messages with
# passwords, and tracedata on top of that also the full data exchanges (full
# messages), which can be a large amount of data.
LogLevel:
# Overrides of log level per package (e.g. queue, smtpclient, smtpserver,
# imapserver, spf, dkim, dmarc, dmarcdb, autotls, junk, mtasts, tlsrpt).
# (optional)
PackageLogLevels:
x:
# User to switch to after binding to all sockets as root. Default: mox. If the
# value is not a known user, it is parsed as integer and used as uid and gid.
# (optional)
User:
# If true, do not automatically fix file permissions when starting up. By default,
# mox will ensure reasonable owner/permissions on the working, data and config
# directories (and files), and mox binary (if present). (optional)
NoFixPermissions: false
# Full hostname of system, e.g. mail.<domain>
Hostname:
# If enabled, a single DNS TXT lookup of _updates.xmox.nl is done every 24h to
# check for a new release. Each time a new release is found, a changelog is
# fetched from https://updates.xmox.nl and delivered to the postmaster mailbox.
# (optional)
CheckUpdates: false
# In pedantic mode protocol violations (that happen in the wild) for SMTP/IMAP/etc
# result in errors instead of accepting such behaviour. (optional)
Pedantic: false
# Global TLS configuration, e.g. for additional Certificate Authorities. Used for
# outgoing SMTP connections, HTTPS requests. (optional)
TLS:
# (optional)
CA:
# (optional)
AdditionalToSystem: false
# (optional)
CertFiles:
-
# Automatic TLS configuration with ACME, e.g. through Let's Encrypt. The key is a
# name referenced in TLS configs, e.g. letsencrypt. (optional)
ACME:
x:
# For letsencrypt, use https://acme-v02.api.letsencrypt.org/directory.
DirectoryURL:
# How long before expiration to renew the certificate. Default is 30 days.
# (optional)
RenewBefore: 0s
# Email address to register at ACME provider. The provider can email you when
# certificates are about to expire. If you configure an address for which email is
# delivered by this server, keep in mind that TLS misconfigurations could result
# in such notification emails not arriving.
ContactEmail:
# TLS port for ACME validation, 443 by default. You should only override this if
# you cannot listen on port 443 directly. ACME will make requests to port 443, so
# you'll have to add an external mechanism to get the connection here, e.g. by
# configuring port forwarding. (optional)
Port: 0
# File containing hash of admin password, for authentication in the web admin
# pages (if enabled). (optional)
AdminPasswordFile:
# Listeners are groups of IP addresses and services enabled on those IP addresses,
# such as SMTP/IMAP or internal endpoints for administration or Prometheus
# metrics. All listeners with SMTP/IMAP services enabled will serve all configured
# domains. If the listener is named 'public', it will get a few helpful additional
# configuration checks, for acme automatic tls certificates and monitoring of ips
# in dnsbls if those are configured.
Listeners:
x:
# Use 0.0.0.0 to listen on all IPv4 and/or :: to listen on all IPv6 addresses, but
# it is better to explicitly specify the IPs you want to use for email, as mox
# will make sure outgoing connections will only be made from one of those IPs.
IPs:
-
# Set this if the specified IPs are not the public IPs, but are NATed. This makes
# the DNS check skip a few checks related to IPs, such as for iprev, mx, spf,
# autoconfig, autodiscover. (optional)
IPsNATed: false
# If empty, the config global Hostname is used. (optional)
Hostname:
# For SMTP/IMAP STARTTLS, direct TLS and HTTPS connections. (optional)
TLS:
# Name of provider from top-level configuration to use for ACME, e.g. letsencrypt.
# (optional)
ACME:
# Key and certificate files are opened by the privileged root process and passed
# to the unprivileged mox process, so no special permissions are required.
# (optional)
KeyCerts:
-
# Certificate including intermediate CA certificates, in PEM format.
CertFile:
# Private key for certificate, in PEM format. PKCS8 is recommended, but PKCS1 and
# EC private keys are recognized as well.
KeyFile:
# Minimum TLS version. Default: TLSv1.2. (optional)
MinVersion:
# Maximum size in bytes accepted incoming and outgoing messages. Default is 100MB.
# (optional)
SMTPMaxMessageSize: 0
# (optional)
SMTP:
Enabled: false
# Default 25. (optional)
Port: 0
# Do not offer STARTTLS to secure the connection. Not recommended. (optional)
NoSTARTTLS: false
# Do not accept incoming messages if STARTTLS is not active. Can be used in
# combination with a strict MTA-STS policy. A remote SMTP server may not support
# TLS and may not be able to deliver messages. (optional)
RequireSTARTTLS: false
# Addresses of DNS block lists for incoming messages. Block lists are only
# consulted for connections/messages without enough reputation to make an
# accept/reject decision. This prevents sending IPs of all communications to the
# block list provider. If any of the listed DNSBLs contains a requested IP
# address, the message is rejected as spam. The DNSBLs are checked for healthiness
# before use, at most once per 4 hours. Example DNSBLs: sbl.spamhaus.org,
# bl.spamcop.net (optional)
DNSBLs:
-
# SMTP for submitting email, e.g. by email applications. Starts out in plain text,
# can be upgraded to TLS with the STARTTLS command. Prefer using Submissions which
# is always a TLS connection. (optional)
Submission:
Enabled: false
# Default 587. (optional)
Port: 0
# Do not require STARTTLS. Since users must login, this means password may be sent
# without encryption. Not recommended. (optional)
NoRequireSTARTTLS: false
# SMTP over TLS for submitting email, by email applications. Requires a TLS
# config. (optional)
Submissions:
Enabled: false
# Default 465. (optional)
Port: 0
# IMAP for reading email, by email applications. Starts out in plain text, can be
# upgraded to TLS with the STARTTLS command. Prefer using IMAPS instead which is
# always a TLS connection. (optional)
IMAP:
Enabled: false
# Default 143. (optional)
Port: 0
# Enable this only when the connection is otherwise encrypted (e.g. through a
# VPN). (optional)
NoRequireSTARTTLS: false
# IMAP over TLS for reading email, by email applications. Requires a TLS config.
# (optional)
IMAPS:
Enabled: false
# Default 993. (optional)
Port: 0
# Account web interface, for email users wanting to change their accounts, e.g.
# set new password, set new delivery rulesets. Served at /. (optional)
AccountHTTP:
Enabled: false
# Default 80. (optional)
Port: 0
# Path to serve account requests on, e.g. /mox/. Useful if domain serves other
# resources. Default is /. (optional)
Path:
# Account web interface listener for HTTPS. Requires a TLS config. (optional)
AccountHTTPS:
Enabled: false
# Default 80. (optional)
Port: 0
# Path to serve account requests on, e.g. /mox/. Useful if domain serves other
# resources. Default is /. (optional)
Path:
# Admin web interface, for managing domains, accounts, etc. Served at /admin/.
# Preferably only enable on non-public IPs. Hint: use 'ssh -L 8080:localhost:80
# you@yourmachine' and open http://localhost:8080/admin/, or set up a tunnel (e.g.
# WireGuard) and add its IP to the mox 'internal' listener. (optional)
AdminHTTP:
Enabled: false
# Default 80. (optional)
Port: 0
# Path to serve admin requests on, e.g. /moxadmin/. Useful if domain serves other
# resources. Default is /admin/. (optional)
Path:
# Admin web interface listener for HTTPS. Requires a TLS config. Preferably only
# enable on non-public IPs. (optional)
AdminHTTPS:
Enabled: false
# Default 443. (optional)
Port: 0
# Path to serve admin requests on, e.g. /moxadmin/. Useful if domain serves other
# resources. Default is /admin/. (optional)
Path:
# Serve prometheus metrics, for monitoring. You should not enable this on a public
# IP. (optional)
MetricsHTTP:
Enabled: false
# Default 8010. (optional)
Port: 0
# Serve /debug/pprof/ for profiling a running mox instance. Do not enable this on
# a public IP! (optional)
PprofHTTP:
Enabled: false
# Default 8011. (optional)
Port: 0
# Serve autoconfiguration/autodiscovery to simplify configuring email
# applications, will use port 443. Requires a TLS config. (optional)
AutoconfigHTTPS:
Enabled: false
# TLS port, 443 by default. You should only override this if you cannot listen on
# port 443 directly. Autoconfig requests will be made to port 443, so you'll have
# to add an external mechanism to get the connection here, e.g. by configuring
# port forwarding. (optional)
Port: 0
# If set, plain HTTP instead of HTTPS is spoken on the configured port. Can be
# useful when the autoconfig domain is reverse proxied. (optional)
NonTLS: false
# Serve MTA-STS policies describing SMTP TLS requirements. Requires a TLS config.
# (optional)
MTASTSHTTPS:
Enabled: false
# TLS port, 443 by default. You should only override this if you cannot listen on
# port 443 directly. MTA-STS requests will be made to port 443, so you'll have to
# add an external mechanism to get the connection here, e.g. by configuring port
# forwarding. (optional)
Port: 0
# If set, plain HTTP instead of HTTPS is spoken on the configured port. Can be
# useful when the mta-sts domain is reverse proxied. (optional)
NonTLS: false
# All configured WebHandlers will serve on an enabled listener. (optional)
WebserverHTTP:
Enabled: false
# Port for plain HTTP (non-TLS) webserver. (optional)
Port: 0
# All configured WebHandlers will serve on an enabled listener. Either ACME must
# be configured, or for each WebHandler domain a TLS certificate must be
# configured. (optional)
WebserverHTTPS:
Enabled: false
# Port for HTTPS webserver. (optional)
Port: 0
# Destination for emails delivered to postmaster addresses: a plain 'postmaster'
# without domain, 'postmaster@<hostname>' (also for each listener with SMTP
# enabled), and as fallback for each domain without explicitly configured
# postmaster destination.
Postmaster:
Account:
# E.g. Postmaster or Inbox.
Mailbox:
# Mailboxes to create when adding an account. Inbox is always created. If no
# mailboxes are specified, the following are automatically created: Sent, Archive,
# Trash, Drafts and Junk. (optional)
DefaultMailboxes:
-
# Transport are mechanisms for delivering messages. Transports can be referenced
# from Routes in accounts, domains and the global configuration. There is always
# an implicit/fallback delivery transport doing direct delivery with SMTP from the
# outgoing message queue. Transports are typically only configured when using
# smarthosts, i.e. when delivering through another SMTP server. Zero or one
# transport methods must be set in a transport, never multiple. When using an
# external party to send email for a domain, keep in mind you may have to add
# their IP address to your domain's SPF record, and possibly additional DKIM
# records. (optional)
Transports:
x:
# Submission SMTP over a TLS connection to submit email to a remote queue.
# (optional)
Submissions:
# Host name to connect to and for verifying its TLS certificate.
Host:
# If unset or 0, the default port for submission(s)/smtp is used: 25 for SMTP, 465
# for submissions (with TLS), 587 for submission (possibly with STARTTLS).
# (optional)
Port: 0
# If set an unverifiable remote TLS certificate during STARTTLS is accepted.
# (optional)
STARTTLSInsecureSkipVerify: false
# If set for submission or smtp transport, do not attempt STARTTLS on the
# connection. Authentication credentials and messages will be transferred in clear
# text. (optional)
NoSTARTTLS: false
# If set, authentication credentials for the remote server. (optional)
Auth:
Username:
Password:
# Allowed authentication mechanisms. Defaults to SCRAM-SHA-256, SCRAM-SHA-1,
# CRAM-MD5. Not included by default: PLAIN. (optional)
Mechanisms:
-
# Submission SMTP over a plain TCP connection (possibly with STARTTLS) to submit
# email to a remote queue. (optional)
Submission:
# Host name to connect to and for verifying its TLS certificate.
Host:
# If unset or 0, the default port for submission(s)/smtp is used: 25 for SMTP, 465
# for submissions (with TLS), 587 for submission (possibly with STARTTLS).
# (optional)
Port: 0
# If set an unverifiable remote TLS certificate during STARTTLS is accepted.
# (optional)
STARTTLSInsecureSkipVerify: false
# If set for submission or smtp transport, do not attempt STARTTLS on the
# connection. Authentication credentials and messages will be transferred in clear
# text. (optional)
NoSTARTTLS: false
# If set, authentication credentials for the remote server. (optional)
Auth:
Username:
Password:
# Allowed authentication mechanisms. Defaults to SCRAM-SHA-256, SCRAM-SHA-1,
# CRAM-MD5. Not included by default: PLAIN. (optional)
Mechanisms:
-
# SMTP over a plain connection (possibly with STARTTLS), typically for
# old-fashioned unauthenticated relaying to a remote queue. (optional)
SMTP:
# Host name to connect to and for verifying its TLS certificate.
Host:
# If unset or 0, the default port for submission(s)/smtp is used: 25 for SMTP, 465
# for submissions (with TLS), 587 for submission (possibly with STARTTLS).
# (optional)
Port: 0
# If set an unverifiable remote TLS certificate during STARTTLS is accepted.
# (optional)
STARTTLSInsecureSkipVerify: false
# If set for submission or smtp transport, do not attempt STARTTLS on the
# connection. Authentication credentials and messages will be transferred in clear
# text. (optional)
NoSTARTTLS: false
# If set, authentication credentials for the remote server. (optional)
Auth:
Username:
Password:
# Allowed authentication mechanisms. Defaults to SCRAM-SHA-256, SCRAM-SHA-1,
# CRAM-MD5. Not included by default: PLAIN. (optional)
Mechanisms:
-
# Like regular direct delivery, but makes outgoing connections through a SOCKS
# proxy. (optional)
Socks:
# Address of SOCKS proxy, of the form host:port or ip:port.
Address:
# IP addresses connections from the SOCKS server will originate from. This IP
# addresses should be configured in the SPF record (keep in mind DNS record time
# to live (TTL) when adding a SOCKS proxy). Reverse DNS should be set up for these
# address, resolving to RemoteHostname. These are typically the IPv4 and IPv6
# address for the host in the Address field.
RemoteIPs:
-
# Hostname belonging to RemoteIPs. This name is used during in SMTP EHLO. This is
# typically the hostname of the host in the Address field.
RemoteHostname:
# domains.conf
# Domains for which email is accepted. For internationalized domains, use their
# IDNA names in UTF-8.
Domains:
x:
# Free-form description of domain. (optional)
Description:
# If not empty, only the string before the separator is used to for email delivery
# decisions. For example, if set to "+", you+anything@example.com will be
# delivered to you@example.com. (optional)
LocalpartCatchallSeparator:
# If set, upper/lower case is relevant for email delivery. (optional)
LocalpartCaseSensitive: false
# With DKIM signing, a domain is taking responsibility for (content of) emails it
# sends, letting receiving mail servers build up a (hopefully positive) reputation
# of the domain, which can help with mail delivery. (optional)
DKIM:
# Emails can be DKIM signed. Config parameters are per selector. A DNS record must
# be created for each selector. Add the name to Sign to use the selector for
# signing messages.
Selectors:
x:
# sha256 (default) or (older, not recommended) sha1 (optional)
Hash:
# (optional)
Canonicalization:
# If set, some modifications to the headers (mostly whitespace) are allowed.
HeaderRelaxed: false
# If set, some whitespace modifications to the message body are allowed.
BodyRelaxed: false
# Headers to sign with DKIM. If empty, a reasonable default set of headers is
# selected. (optional)
Headers:
-
# If set, don't prevent duplicate headers from being added. Not recommended.
# (optional)
DontSealHeaders: false
# Period a signature is valid after signing, as duration, e.g. 72h. The period
# should be enough for delivery at the final destination, potentially with several
# hops/relays. In the order of days at least. (optional)
Expiration:
# Either an RSA or ed25519 private key file in PKCS8 PEM form.
PrivateKeyFile:
# List of selectors that emails will be signed with. (optional)
Sign:
-
# With DMARC, a domain publishes, in DNS, a policy on how other mail servers
# should handle incoming messages with the From-header matching this domain and/or
# subdomain (depending on the configured alignment). Receiving mail servers use
# this to build up a reputation of this domain, which can help with mail delivery.
# A domain can also publish an email address to which reports about DMARC
# verification results can be sent by verifying mail servers, useful for
# monitoring. Incoming DMARC reports are automatically parsed, validated, added to
# metrics and stored in the reporting database for later display in the admin web
# pages. (optional)
DMARC:
# Address-part before the @ that accepts DMARC reports. Must be
# non-internationalized. Recommended value: dmarc-reports.
Localpart:
# Account to deliver to.
Account:
# Mailbox to deliver to, e.g. DMARC.
Mailbox:
# With MTA-STS a domain publishes, in DNS, presence of a policy for
# using/requiring TLS for SMTP connections. The policy is served over HTTPS.
# (optional)
MTASTS:
# Policies are versioned. The version must be specified in the DNS record. If you
# change a policy, first change it in mox, then update the DNS record.
PolicyID:
# testing, enforce or none. If set to enforce, a remote SMTP server will not
# deliver email to us if it cannot make a TLS connection.
Mode:
# How long a remote mail server is allowed to cache a policy. Typically 1 or
# several weeks.
MaxAge: 0s
# List of server names allowed for SMTP. If empty, the configured hostname is set.
# Host names can contain a wildcard (*) as a leading label (matching a single
# label, e.g. *.example matches host.example, not sub.host.example). (optional)
MX:
-
# With TLSRPT a domain specifies in DNS where reports about encountered SMTP TLS
# behaviour should be sent. Useful for monitoring. Incoming TLS reports are
# automatically parsed, validated, added to metrics and stored in the reporting
# database for later display in the admin web pages. (optional)
TLSRPT:
# Address-part before the @ that accepts TLSRPT reports. Recommended value:
# tls-reports.
Localpart:
# Account to deliver to.
Account:
# Mailbox to deliver to, e.g. TLSRPT.
Mailbox:
# Routes for delivering outgoing messages through the queue. Each delivery attempt
# evaluates account routes, these domain routes and finally global routes. The
# transport of the first matching route is used in the delivery attempt. If no
# routes match, which is the default with no configured routes, messages are
# delivered directly from the queue. (optional)
Routes:
-
# Matches if the envelope from domain matches one of the configured domains, or if
# the list is empty. If a domain starts with a dot, prefixes of the domain also
# match. (optional)
FromDomain:
-
# Like FromDomain, but matching against the envelope to domain. (optional)
ToDomain:
-
# Matches if at least this many deliveries have already been attempted. This can
# be used to attempt sending through a smarthost when direct delivery has failed
# for several times. (optional)
MinimumAttempts: 0
Transport:
# Accounts to which email can be delivered. An account can accept email for
# multiple domains, for multiple localparts, and deliver to multiple mailboxes.
Accounts:
x:
# Default domain for account. Deprecated behaviour: If a destination is not a full
# address but only a localpart, this domain is added to form a full address.
Domain:
# Free form description, e.g. full name or alternative contact info. (optional)
Description:
# Destinations, keys are email addresses (with IDNA domains). If the address is of
# the form '@domain', i.e. with localpart missing, it serves as a catchall for the
# domain, matching all messages that are not explicitly configured. Deprecated
# behaviour: If the address is not a full address but a localpart, it is combined
# with Domain to form a full address.
Destinations:
x:
# Mailbox to deliver to if none of Rulesets match. Default: Inbox. (optional)
Mailbox:
# Delivery rules based on message and SMTP transaction. You may want to match each
# mailing list by SMTP MailFrom address, VerifiedDomain and/or List-ID header
# (typically <listname.example.org> if the list address is listname@example.org),
# delivering them to their own mailbox. (optional)
Rulesets:
-
# Matches if this regular expression matches (a substring of) the SMTP MAIL FROM
# address (not the message From-header). E.g. user@example.org. (optional)
SMTPMailFromRegexp:
# Matches if this domain matches an SPF- and/or DKIM-verified (sub)domain.
# (optional)
VerifiedDomain:
# Matches if these header field/value regular expressions all match (substrings
# of) the message headers. Header fields and valuees are converted to lower case
# before matching. Whitespace is trimmed from the value before matching. A header
# field can occur multiple times in a message, only one instance has to match. For
# mailing lists, you could match on ^list-id$ with the value typically the mailing
# list address in angled brackets with @ replaced with a dot, e.g.
# <name\.lists\.example\.org>. (optional)
HeadersRegexp:
x:
# Influence the spam filtering, this does not change whether this ruleset applies
# to a message. If this domain matches an SPF- and/or DKIM-verified (sub)domain,
# the message is accepted without further spam checks, such as a junk filter or
# DMARC reject evaluation. DMARC rejects should not apply for mailing lists that
# are not configured to rewrite the From-header of messages that don't have a
# passing DKIM signature of the From-domain. Otherwise, by rejecting messages, you
# may be automatically unsubscribed from the mailing list. The assumption is that
# mailing lists do their own spam filtering/moderation. (optional)
ListAllowDomain:
# Mailbox to deliver to if this ruleset matches.
Mailbox:
# If configured, messages classified as weakly spam are rejected with instructions
# to retry delivery, but this time with a signed token added to the subject.
# During the next delivery attempt, the signed token will bypass the spam filter.
# Messages with a clear spam signal, such as a known bad reputation, are
# rejected/delayed without a signed token. (optional)
SubjectPass:
# How long unique values are accepted after generating, e.g. 12h.
Period: 0s
# Mail that looks like spam will be rejected, but a copy can be stored temporarily
# in a mailbox, e.g. Rejects. If mail isn't coming in when you expect, you can
# look there. The mail still isn't accepted, so the remote mail server may retry
# (hopefully, if legitimate), or give up (hopefully, if indeed a spammer).
# Messages are automatically removed from this mailbox, so do not set it to a
# mailbox that has messages you want to keep. (optional)
RejectsMailbox:
# Automatically set $Junk and $NotJunk flags based on mailbox messages are
# delivered/moved/copied to. Email clients typically have too limited
# functionality to conveniently set these flags, especially $NonJunk, but they can
# all move messages to a different mailbox, so this helps them. (optional)
AutomaticJunkFlags:
# If enabled, flags will be set automatically if they match a regular expression
# below. When two of the three mailbox regular expressions are set, the remaining
# one will match all unmatched messages. Messages are matched in the order
# specified and the search stops on the first match. Mailboxes are lowercased
# before matching.
Enabled: false
# Example: ^(junk|spam). (optional)
JunkMailboxRegexp:
# Example: ^(inbox|neutral|postmaster|dmarc|tlsrpt|rejects), and you may wish to
# add trash depending on how you use it, or leave this empty. (optional)
NeutralMailboxRegexp:
# Example: .* or an empty string. (optional)
NotJunkMailboxRegexp:
# Content-based filtering, using the junk-status of individual messages to rank
# words in such messages as spam or ham. It is recommended you always set the
# applicable (non)-junk status on messages, and that you do not empty your Trash
# because those messages contain valuable ham/spam training information.
# (optional)
JunkFilter:
# Approximate spaminess score between 0 and 1 above which emails are rejected as
# spam. Each delivery attempt adds a little noise to make it slightly harder for
# spammers to identify words that strongly indicate non-spaminess and use it to
# bypass the filter. E.g. 0.95.
Threshold: 0.000000
Params:
# Track ham/spam ranking for single words. (optional)
Onegrams: false
# Track ham/spam ranking for each two consecutive words. (optional)
Twograms: false
# Track ham/spam ranking for each three consecutive words. (optional)
Threegrams: false
# Maximum power a word (combination) can have. If spaminess is 0.99, and max power
# is 0.1, spaminess of the word will be set to 0.9. Similar for ham words.
MaxPower: 0.000000
# Number of most spammy/hammy words to use for calculating probability. E.g. 10.
TopWords: 0
# Ignore words that are this much away from 0.5 haminess/spaminess. E.g. 0.1,
# causing word (combinations) of 0.4 to 0.6 to be ignored. (optional)
IgnoreWords: 0.000000
# Occurrences in word database until a word is considered rare and its influence
# in calculating probability reduced. E.g. 1 or 2. (optional)
RareWords: 0
# Maximum number of outgoing messages for this account in a 24 hour window. This
# limits the damage to recipients and the reputation of this mail server in case
# of account compromise. Default 1000. (optional)
MaxOutgoingMessagesPerDay: 0
# Maximum number of first-time recipients in outgoing messages for this account in
# a 24 hour window. This limits the damage to recipients and the reputation of
# this mail server in case of account compromise. Default 200. (optional)
MaxFirstTimeRecipientsPerDay: 0
# Routes for delivering outgoing messages through the queue. Each delivery attempt
# evaluates these account routes, domain routes and finally global routes. The
# transport of the first matching route is used in the delivery attempt. If no
# routes match, which is the default with no configured routes, messages are
# delivered directly from the queue. (optional)
Routes:
-
# Matches if the envelope from domain matches one of the configured domains, or if
# the list is empty. If a domain starts with a dot, prefixes of the domain also
# match. (optional)
FromDomain:
-
# Like FromDomain, but matching against the envelope to domain. (optional)
ToDomain:
-
# Matches if at least this many deliveries have already been attempted. This can
# be used to attempt sending through a smarthost when direct delivery has failed
# for several times. (optional)
MinimumAttempts: 0
Transport:
# Redirect all requests from domain (key) to domain (value). Always redirects to
# HTTPS. For plain HTTP redirects, use a WebHandler with a WebRedirect. (optional)
WebDomainRedirects:
x:
# Handle webserver requests by serving static files, redirecting or
# reverse-proxying HTTP(s). The first matching WebHandler will handle the request.
# Built-in handlers, e.g. for account, admin, autoconfig and mta-sts always run
# first. If no handler matches, the response status code is file not found (404).
# If functionality you need is missng, simply forward the requests to an
# application that can provide the needed functionality. (optional)
WebHandlers:
-
# Name to use in logging and metrics. (optional)
LogName:
# Both Domain and PathRegexp must match for this WebHandler to match a request.
# Exactly one of WebStatic, WebRedirect, WebForward must be set.
Domain:
# Regular expression matched against request path, must always start with ^ to
# ensure matching from the start of the path. The matching prefix can optionally
# be stripped by WebForward. The regular expression does not have to end with $.
PathRegexp:
# If set, plain HTTP requests are not automatically permanently redirected (308)
# to HTTPS. If you don't have a HTTPS webserver configured, set this to true.
# (optional)
DontRedirectPlainHTTP: false
# Serve static files. (optional)
WebStatic:
# Path to strip from the request URL before evaluating to a local path. If the
# requested URL path does not start with this prefix and ContinueNotFound it is
# considered non-matching and next WebHandlers are tried. If ContinueNotFound is
# not set, a file not found (404) is returned in that case. (optional)
StripPrefix:
# Directory to serve files from for this handler. Keep in mind that relative paths
# are relative to the working directory of mox.
Root:
# If set, and a directory is requested, and no index.html is present that can be
# served, a file listing is returned. Results in 403 if ListFiles is not set. If a
# directory is requested and the URL does not end with a slash, the response is a
# redirect to the path with trailing slash. (optional)
ListFiles: false
# If a requested URL does not exist, don't return a file not found (404) response,
# but consider this handler non-matching and continue attempts to serve with later
# WebHandlers, which may be a reverse proxy generating dynamic content, possibly
# even writing a static file for a next request to serve statically. If
# ContinueNotFound is set, HTTP requests other than GET and HEAD do not match.
# This mechanism can be used to implement the equivalent of 'try_files' in other
# webservers. (optional)
ContinueNotFound: false
# Headers to add to the response. Useful for cache-control, content-type, etc. By
# default, Content-Type headers are automatically added for recognized file types,
# unless added explicitly through this setting. For directory listings, a
# content-type header is skipped. (optional)
ResponseHeaders:
x:
# Redirect requests to configured URL. (optional)
WebRedirect:
# Base URL to redirect to. The path must be empty and will be replaced, either by
# the request URL path, or by OrigPathRegexp/ReplacePath. Scheme, host, port and
# fragment stay intact, and query strings are combined. If empty, the response
# redirects to a different path through OrigPathRegexp and ReplacePath, which must
# then be set. Use a URL without scheme to redirect without changing the protocol,
# e.g. //newdomain/. If a redirect would send a request to a URL with the same
# scheme, host and path, the WebRedirect does not match so a next WebHandler can
# be tried. This can be used to redirect all plain http traffic to https.
# (optional)
BaseURL:
# Regular expression for matching path. If set and path does not match, a 404 is
# returned. The HTTP path used for matching always starts with a slash. (optional)
OrigPathRegexp:
# Replacement path for destination URL based on OrigPathRegexp. Implemented with
# Go's Regexp.ReplaceAllString: $1 is replaced with the text of the first
# submatch, etc. If both OrigPathRegexp and ReplacePath are empty, BaseURL must be
# set and all paths are redirected unaltered. (optional)
ReplacePath:
# Status code to use in redirect, e.g. 307. By default, a permanent redirect (308)
# is returned. (optional)
StatusCode: 0
# Forward requests to another webserver, i.e. reverse proxy. (optional)
WebForward:
# Strip the matching WebHandler path from the WebHandler before forwarding the
# request. (optional)
StripPath: false
# URL to forward HTTP requests to, e.g. http://127.0.0.1:8123/base. If StripPath
# is false the full request path is added to the URL. Host headers are sent
# unmodified. New X-Forwarded-{For,Host,Proto} headers are set. Any query string
# in the URL is ignored. Requests are made using Go's net/http.DefaultTransport
# that takes environment variables HTTP_PROXY and HTTPS_PROXY into account.
# Websocket connections are forwarded and data is copied between client and
# backend without looking at the framing. The websocket 'version' and
# 'key'/'accept' headers are verified during the handshake, but other websocket
# headers, including 'origin', 'protocol' and 'extensions' headers, are not
# inspected and the backend is responsible for verifying/interpreting them.
URL:
# Headers to add to the response. Useful for adding security- and cache-related
# headers. (optional)
ResponseHeaders:
x:
# Routes for delivering outgoing messages through the queue. Each delivery attempt
# evaluates account routes, domain routes and finally these global routes. The
# transport of the first matching route is used in the delivery attempt. If no
# routes match, which is the default with no configured routes, messages are
# delivered directly from the queue. (optional)
Routes:
-
# Matches if the envelope from domain matches one of the configured domains, or if
# the list is empty. If a domain starts with a dot, prefixes of the domain also
# match. (optional)
FromDomain:
-
# Like FromDomain, but matching against the envelope to domain. (optional)
ToDomain:
-
# Matches if at least this many deliveries have already been attempted. This can
# be used to attempt sending through a smarthost when direct delivery has failed
# for several times. (optional)
MinimumAttempts: 0
Transport:
# Examples
Mox includes configuration files to illustrate common setups. You can see these
examples with "mox example", and print a specific example with "mox example
<name>". Below are all examples included in mox.
# Example webhandlers
# Snippet of domains.conf to configure WebDomainRedirects and WebHandlers.
# Redirect all requests for mox.example to https://www.mox.example.
WebDomainRedirects:
mox.example: www.mox.example
# Each request is matched against these handlers until one matches and serves it.
WebHandlers:
-
# Redirect all plain http requests to https, leaving path, query strings, etc
# intact. When the request is already to https, the destination URL would have the
# same scheme, host and path, causing this redirect handler to not match the
# request (and not cause a redirect loop) and the webserver to serve the request
# with a later handler.
LogName: redirhttps
Domain: www.mox.example
PathRegexp: ^/
# Could leave DontRedirectPlainHTTP at false if it wasn't for this being an
# example for doing this redirect.
DontRedirectPlainHTTP: true
WebRedirect:
BaseURL: https://www.mox.example
-
# The name of the handler, used in logging and metrics.
LogName: staticmjl
# With ACME configured, each configured domain will automatically get a TLS
# certificate on first request.
Domain: www.mox.example
PathRegexp: ^/who/mjl/
WebStatic:
StripPrefix: /who/mjl
# Requested path /who/mjl/inferno/ resolves to local web/mjl/inferno.
# If a directory contains an index.html, it is served when a directory is requested.
Root: web/mjl
# With ListFiles true, if a directory does not contain an index.html, the contents are listed.
ListFiles: true
ResponseHeaders:
X-Mox: hi
-
LogName: redir
Domain: www.mox.example
PathRegexp: ^/redir/a/b/c
# Don't redirect from plain HTTP to HTTPS.
DontRedirectPlainHTTP: true
WebRedirect:
# Just change the domain and add query string set fragment. No change to scheme.
# Path will start with /redir/a/b/c (and whathever came after) because no
# OrigPathRegexp+ReplacePath is set.
BaseURL: //moxest.example?q=1#frag
# Default redirection is 308 - Permanent Redirect.
StatusCode: 307
-
LogName: oldnew
Domain: www.mox.example
PathRegexp: ^/old/
WebRedirect:
# Replace path, leaving rest of URL intact.
OrigPathRegexp: ^/old/(.*)
ReplacePath: /new/$1
-
LogName: app
Domain: www.mox.example
PathRegexp: ^/app/
WebForward:
# Strip the path matched by PathRegexp before forwarding the request. So original
# request /app/api become just /api.
StripPath: true
# URL of backend, where requests are forwarded to. The path in the URL is kept,
# so for incoming request URL /app/api, the outgoing request URL has path /app-v2/api.
# Requests are made with Go's net/http DefaultTransporter, including using
# HTTP_PROXY and HTTPS_PROXY environment variables.
URL: http://127.0.0.1:8900/app-v2/
# Add headers to response.
ResponseHeaders:
X-Frame-Options: deny
X-Content-Type-Options: nosniff
*/
package config
// NOTE: DO NOT EDIT, this file is generated by ../gendoc.sh.