Commit graph

14 commits

Author SHA1 Message Date
Mechiel Lukkien
92e018e463
change mox to start as root, bind to network sockets, then drop to regular unprivileged mox user
makes it easier to run on bsd's, where you cannot (easily?) let non-root users
bind to ports <1024. starting as root also paves the way for future improvements
with privilege separation.

unfortunately, this requires changes to how you start mox. though mox will help
by automatically fix up dir/file permissions/ownership.

if you start mox from the systemd unit file, you should update it so it starts
as root and adds a few additional capabilities:

        # first update the mox binary, then, as root:
        ./mox config printservice >mox.service
        systemctl daemon-reload
        systemctl restart mox
        journalctl -f -u mox &
        # you should see mox start up, with messages about fixing permissions on dirs/files.

if you used the recommended config/ and data/ directory, in a directory just for
mox, and with the mox user called "mox", this should be enough.

if you don't want mox to modify dir/file permissions, set "NoFixPermissions:
true" in mox.conf.

if you named the mox user something else than mox, e.g. "_mox", add "User: _mox"
to mox.conf.

if you created a shared service user as originally suggested, you may want to
get rid of that as it is no longer useful and may get in the way. e.g. if you
had /home/service/mox with a "service" user, that service user can no longer
access any files: only mox and root can.

this also adds scripts for building mox docker images for alpine-supported
platforms.

the "restart" subcommand has been removed. it wasn't all that useful and got in
the way.

and another change: when adding a domain while mtasts isn't enabled, don't add
the per-domain mtasts config, as it would cause failure to add the domain.

based on report from setting up mox on openbsd from mteege.
and based on issue #3. thanks for the feedback!
2023-02-27 12:19:55 +01:00
Mechiel Lukkien
4e5030ff38
fix output of "mox checkupdate", and specify changes to be from newest to oldest 2023-02-17 20:14:26 +01:00
Mechiel Lukkien
5c33640aea
consistently use log.Check for logging errors that "should not happen", don't influence application flow
sooner or later, someone will notice one of these messages, which will lead us
to a bug.
2023-02-16 13:22:00 +01:00
Mechiel Lukkien
23b530ae36
use config/mox.conf as default path for the config file
this matches how the quickstart recommends setting up mox.
i've been running "./mox -config/mox.conf" from there for admin commands, but
"mox" is enough now.
2023-02-13 22:40:45 +01:00
Mechiel Lukkien
bf04fb8a1a
improve training of junk filter
before, we used heuristics to decide when to train/untrain a message as junk or
nonjunk: the message had to be seen, be in certain mailboxes. then if a message
was marked as junk, it was junk. and otherwise it was nonjunk. this wasn't good
enough: you may want to keep some messages around as neither junk or nonjunk.
and that wasn't possible.

ideally, we would just look at the imap $Junk and $NotJunk flags. the problem
is that mail clients don't set these flags, or don't make it easy. thunderbird
can set the flags based on its own bayesian filter. it has a shortcut for
marking Junk and moving it to the junk folder (good), but the counterpart of
notjunk only marks a message as notjunk without showing in the UI that it was
marked as notjunk. there is also no "move and mark as notjunk" mechanism. e.g.
"archive" does not mark a message as notjunk. ios mail and mutt don't appear to
have any way to see or change the $Junk and $NotJunk flags.

what email clients do have is the ability to move messages to other
mailboxes/folders. so mox now has a mechanism that allows you to configure
mailboxes that automatically set $Junk or $NotJunk (or clear both) when a
message is moved/copied/delivered to that folder. e.g. a mailbox called junk or
spam or rejects marks its messags as junk. inbox, postmaster, dmarc, tlsrpt,
neutral* mark their messages as neither junk or notjunk. other folders mark
their messages as notjunk. e.g. list/*, archive. this functionality is
optional, but enabled with the quickstart and for new accounts.

also, mox now keeps track of the previous training of a message and will only
untrain/train if needed. before, there probably have been duplicate or missing
(un)trainings.

this also includes a new subcommand "retrain" to recreate the junkfilter for an
account. you should run it after updating to this version. and you should
probably also modify your account config to include the AutomaticJunkFlags.
2023-02-11 23:00:12 +01:00
Mechiel Lukkien
6cbe4d5d37
allow unsetting a log level through subcommand and add admin page for settng log level 2023-02-06 15:17:46 +01:00
Mechiel Lukkien
4202fbe108
make the setaccountpassword talk through ctl
otherwise, setting a password will block if something has the account open,
e.g. any imap connection. so in practice it only worked when mox isn't running.
2023-02-06 11:31:46 +01:00
Mechiel Lukkien
52e7054c49
fix typo's
some through goreportcard.com
2023-02-06 11:00:11 +01:00
Mechiel Lukkien
e52c9d36a6
support cram-md5 authentication for imap and smtp
and change thunderbird autoconfiguration to use it.

unfortunately, for microsoft autodiscover, there appears to be no way to
request secure password negotiation. so it will default to plain text auth.

cram-md5 is less secure than scram-sha-*, but thunderbird does not yet support
scram auth. it currently chooses "plain", sending the literal password over the
connection (which is TLS-protected, but we don't want to receive clear text
passwords). in short, cram-md5 is better than nothing...

for cram-md5 to work, a new set of derived credentials need to be stored in the
database. so you need to save your password again to make it work. this was
also the case with the scram-sha-1 addition, but i forgot to mention it then.
2023-02-05 16:29:03 +01:00
Mechiel Lukkien
ffb2a10a4e
add two new log levels for tracing sensitive auth protocol messages, and bulk data messages
named "traceauth" and "tracedata".

with this, you can (almost) enable trace logging without fear of logging
sensitive data or ddos'ing your log server.

the caveat is that the imap login command has already printed the line as
regular trace before we can decide it should not be. can be fixed soon.
2023-02-03 20:33:19 +01:00
Mechiel Lukkien
c21b8c0d54
add reverse ip checks during quickstart and in "check dns" admin page/subcommand
- and don't have a global variable "d" in the big checkDomain function in http/admin.go.
- and set loglevel from command-line flag again after loading the config file, for all subcommands except "serve".
2023-02-03 15:54:34 +01:00
Mechiel Lukkien
8bbaa38c74
improve sendmail
- when sendmail is invoked to sent to a local user, eg "root", send to a
  configured defaultaddress instead. previously, we would fail printing usage.
- add a subcommand that prints the config file, /etc/moxsubmit.conf.
- follow the STARTTLS setting.
- fix running as just plain sendmail.
2023-02-03 14:15:34 +01:00
Mechiel Lukkien
ba077dadd0
in dkim-signature header, allow FWS anywhere in "z=" (copied headers), and prevent panic in cli command "mox dkim verify" when a dkim-signature cannot be parsed
the BNF for "z=" does not show FWS is allowed (while it does in other places,
eg base64), but the text above the BNF explains it in words.
2023-02-03 13:29:47 +01:00
Mechiel Lukkien
cb229cb6cf
mox! 2023-01-30 14:27:06 +01:00