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improve dsn handling
have the full smtp reply in the Diagnostic-Code field, not something that resembles it but isn't quite the same. include any additional error message in the Status field as comment. before, we ended up having an Diagnostic-Code that didn't include the original smtp code. it only had the enhanced error code.
This commit is contained in:
Mechiel Lukkien
parent
dc83ad1df5
commit
1c934f0103
8 changed files with 69 additions and 116 deletions
60
dsn/dsn.go
60
dsn/dsn.go
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@ -11,7 +11,6 @@ import (
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"io"
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"mime/multipart"
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"net/textproto"
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"strconv"
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"strings"
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"time"
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@ -100,9 +99,10 @@ type Recipient struct {
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Action Action
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// Enhanced status code. First digit indicates permanent or temporary
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// error. If the string contains more than just a status, that
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// additional text is added as comment when composing a DSN.
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// error.
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Status string
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// For additional details, included in comment.
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StatusComment string
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// Optional fields.
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// Original intended recipient of message. Used with the DSN extensions ORCPT
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@ -114,10 +114,10 @@ type Recipient struct {
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// deliveries.
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RemoteMTA NameIP
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// If RemoteMTA is present, DiagnosticCode is from remote. When
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// creating a DSN, additional text in the string will be added to the
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// DSN as comment.
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DiagnosticCode string
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// DiagnosticCode should either be empty, or start with "smtp; " followed by the
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// literal full SMTP response lines, space separated.
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DiagnosticCode string
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LastAttemptDate time.Time
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FinalLogID string
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@ -272,11 +272,9 @@ func (m *Message) Compose(log mlog.Log, smtputf8 bool) ([]byte, error) {
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st = "2.0.0"
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}
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}
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var rest string
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st, rest = codeLine(st)
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statusLine := st
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if rest != "" {
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statusLine += " (" + rest + ")"
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if r.StatusComment != "" {
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statusLine += " (" + r.StatusComment + ")"
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}
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status("Status", statusLine) // ../rfc/3464:975
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if !r.RemoteMTA.IsZero() {
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@ -289,13 +287,8 @@ func (m *Message) Compose(log mlog.Log, smtputf8 bool) ([]byte, error) {
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}
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// Presence of Diagnostic-Code indicates the code is from Remote-MTA. ../rfc/3464:1053
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if r.DiagnosticCode != "" {
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diagCode, rest := codeLine(r.DiagnosticCode)
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diagLine := diagCode
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if rest != "" {
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diagLine += " (" + rest + ")"
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}
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// ../rfc/6533:589
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status("Diagnostic-Code", "smtp; "+diagLine)
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// ../rfc/3461:1342 ../rfc/6533:589
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status("Diagnostic-Code", r.DiagnosticCode)
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}
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if !r.LastAttemptDate.IsZero() {
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status("Last-Attempt-Date", r.LastAttemptDate.Format(message.RFC5322Z)) // ../rfc/3464:1076
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@ -388,34 +381,3 @@ func (w *errWriter) Write(buf []byte) (int, error) {
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w.err = err
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return n, err
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}
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// split a line into enhanced status code and rest.
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func codeLine(s string) (string, string) {
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t := strings.SplitN(s, " ", 2)
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l := strings.Split(t[0], ".")
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if len(l) != 3 {
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return "", s
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}
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for i, e := range l {
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_, err := strconv.ParseInt(e, 10, 32)
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if err != nil {
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return "", s
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}
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if i == 0 && len(e) != 1 {
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return "", s
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}
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}
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var rest string
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if len(t) == 2 {
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rest = t[1]
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}
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return t[0], rest
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}
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// HasCode returns whether line starts with an enhanced SMTP status code.
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func HasCode(line string) bool {
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// ../rfc/3464:986
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ecode, _ := codeLine(line)
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return ecode != ""
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}
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@ -192,34 +192,3 @@ func TestDSN(t *testing.T) {
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tcheckType(t, &part.Parts[1], "message", "global-delivery-status", "8bit")
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tcompare(t, pmsg.Recipients[0].FinalRecipient, m.Recipients[0].FinalRecipient)
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}
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func TestCode(t *testing.T) {
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testCodeLine := func(line, ecode, rest string) {
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t.Helper()
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e, r := codeLine(line)
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if e != ecode || r != rest {
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t.Fatalf("codeLine %q: got %q %q, expected %q %q", line, e, r, ecode, rest)
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}
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}
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testCodeLine("4.0.0", "4.0.0", "")
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testCodeLine("4.0.0 more", "4.0.0", "more")
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testCodeLine("other", "", "other")
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testCodeLine("other more", "", "other more")
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testHasCode := func(line string, exp bool) {
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t.Helper()
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got := HasCode(line)
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if got != exp {
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t.Fatalf("HasCode %q: got %v, expected %v", line, got, exp)
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}
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}
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testHasCode("4.0.0", true)
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testHasCode("5.7.28", true)
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testHasCode("10.0.0", false) // first number must be single digit.
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testHasCode("4.1.1 more", true)
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testHasCode("other ", false)
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testHasCode("4.2.", false)
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testHasCode("4.2. ", false)
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testHasCode(" 4.2.4", false)
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testHasCode(" 4.2.4 ", false)
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}
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@ -226,6 +226,13 @@ func parseRecipientHeader(mr *textproto.Reader, utf8 bool) (Recipient, error) {
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case "Status":
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// todo: parse the enhanced status code?
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r.Status = v
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t := strings.SplitN(v, "(", 2)
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v = strings.TrimSpace(v)
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if len(t) == 2 && strings.HasSuffix(v, ")") {
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r.Status = strings.TrimSpace(t[0])
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r.StatusComment = strings.TrimSpace(strings.TrimSuffix(t[1], ")"))
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}
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case "Remote-Mta":
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r.RemoteMTA = NameIP{Name: v}
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case "Diagnostic-Code":
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@ -89,14 +89,19 @@ var (
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)
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// todo: rename function, perhaps put some of the params in a delivery struct so we don't pass all the params all the time?
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func fail(ctx context.Context, qlog mlog.Log, m Msg, backoff time.Duration, permanent bool, remoteMTA dsn.NameIP, secodeOpt, errmsg string, moreLines []string) {
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func fail(ctx context.Context, qlog mlog.Log, m Msg, backoff time.Duration, permanent bool, remoteMTA dsn.NameIP, secodeOpt, errmsg, firstLine string, moreLines []string) {
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// todo future: when we implement relaying, we should be able to send DSNs to non-local users. and possibly specify a null mailfrom. ../rfc/5321:1503
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// todo future: when we implement relaying, and a dsn cannot be delivered, and requiretls was active, we cannot drop the message. instead deliver to local postmaster? though ../rfc/8689:383 may intend to say the dsn should be delivered without requiretls?
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// todo future: when we implement smtp dsn extension, parameter RET=FULL must be disregarded for messages with REQUIRETLS. ../rfc/8689:379
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var smtpLines []string
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if firstLine != "" {
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smtpLines = append([]string{firstLine}, moreLines...)
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}
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if permanent || m.MaxAttempts == 0 && m.Attempts >= 8 || m.MaxAttempts > 0 && m.Attempts >= m.MaxAttempts {
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qlog.Errorx("permanent failure delivering from queue", errors.New(errmsg))
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deliverDSNFailure(ctx, qlog, m, remoteMTA, secodeOpt, errmsg, moreLines)
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deliverDSNFailure(ctx, qlog, m, remoteMTA, secodeOpt, errmsg, smtpLines)
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if err := queueDelete(context.Background(), m.ID); err != nil {
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qlog.Errorx("deleting message from queue after permanent failure", err)
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@ -116,7 +121,7 @@ func fail(ctx context.Context, qlog mlog.Log, m Msg, backoff time.Duration, perm
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qlog.Errorx("temporary failure delivering from queue, sending delayed dsn", errors.New(errmsg), slog.Duration("backoff", backoff))
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retryUntil := m.LastAttempt.Add((4 + 8 + 16) * time.Hour)
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deliverDSNDelay(ctx, qlog, m, remoteMTA, secodeOpt, errmsg, moreLines, retryUntil)
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deliverDSNDelay(ctx, qlog, m, remoteMTA, secodeOpt, errmsg, smtpLines, retryUntil)
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} else {
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qlog.Errorx("temporary failure delivering from queue", errors.New(errmsg), slog.Duration("backoff", backoff), slog.Time("nextattempt", m.NextAttempt))
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}
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@ -168,7 +173,7 @@ func deliverDirect(qlog mlog.Log, resolver dns.Resolver, dialer smtpclient.Diale
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recipientDomainResult.Summary.TotalFailureSessionCount++
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}
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fail(ctx, qlog, m, backoff, permanent, dsn.NameIP{}, "", err.Error(), nil)
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fail(ctx, qlog, m, backoff, permanent, dsn.NameIP{}, "", err.Error(), "", nil)
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return
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}
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@ -188,7 +193,7 @@ func deliverDirect(qlog mlog.Log, resolver dns.Resolver, dialer smtpclient.Diale
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} else {
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qlog.Infox("mtasts lookup temporary error, aborting delivery attempt", err, slog.Any("domain", origNextHop))
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recipientDomainResult.Summary.TotalFailureSessionCount++
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fail(ctx, qlog, m, backoff, false, dsn.NameIP{}, "", err.Error(), nil)
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fail(ctx, qlog, m, backoff, false, dsn.NameIP{}, "", err.Error(), "", nil)
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return
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}
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}
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@ -205,7 +210,7 @@ func deliverDirect(qlog mlog.Log, resolver dns.Resolver, dialer smtpclient.Diale
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// RFC 5321 does not specify a clear algorithm, but common practice is probably
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// ../rfc/3974:268.
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var remoteMTA dsn.NameIP
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var secodeOpt, errmsg string
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var firstLine, secodeOpt, errmsg string
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var moreLines []string // For additional SMTP response lines, included in DSN.
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permanent = false
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nmissingRequireTLS := 0
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@ -231,6 +236,7 @@ func deliverDirect(qlog mlog.Log, resolver dns.Resolver, dialer smtpclient.Diale
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metricTLSRequiredNoIgnored.WithLabelValues("mtastsmx").Inc()
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} else {
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errmsg = fmt.Sprintf("mx host %s does not match enforced mta-sts policy with hosts %s", h.Domain, strings.Join(policyHosts, ","))
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firstLine = ""
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moreLines = nil
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qlog.Error("mx host does not match mta-sts policy in mode enforce, skipping", slog.Any("host", h.Domain), slog.Any("policyhosts", policyHosts))
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recipientDomainResult.Summary.TotalFailureSessionCount++
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@ -271,7 +277,7 @@ func deliverDirect(qlog mlog.Log, resolver dns.Resolver, dialer smtpclient.Diale
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var badTLS, ok bool
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var hostResult tlsrpt.Result
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permanent, tlsDANE, badTLS, secodeOpt, remoteIP, errmsg, moreLines, hostResult, ok = deliverHost(nqlog, resolver, dialer, ourHostname, transportName, h, enforceMTASTS, haveMX, origNextHopAuthentic, origNextHop, expandedNextHopAuthentic, expandedNextHop, &m, tlsMode, tlsPKIX, &recipientDomainResult)
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permanent, tlsDANE, badTLS, secodeOpt, remoteIP, errmsg, firstLine, moreLines, hostResult, ok = deliverHost(nqlog, resolver, dialer, ourHostname, transportName, h, enforceMTASTS, haveMX, origNextHopAuthentic, origNextHop, expandedNextHopAuthentic, expandedNextHop, &m, tlsMode, tlsPKIX, &recipientDomainResult)
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var zerotype tlsrpt.PolicyType
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if hostResult.Policy.Type != zerotype {
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@ -298,7 +304,7 @@ func deliverDirect(qlog mlog.Log, resolver dns.Resolver, dialer smtpclient.Diale
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slog.Bool("enforcemtasts", enforceMTASTS),
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slog.Bool("tlsdane", tlsDANE),
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slog.Any("requiretls", m.RequireTLS))
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permanent, _, _, secodeOpt, remoteIP, errmsg, moreLines, _, ok = deliverHost(nqlog, resolver, dialer, ourHostname, transportName, h, enforceMTASTS, haveMX, origNextHopAuthentic, origNextHop, expandedNextHopAuthentic, expandedNextHop, &m, smtpclient.TLSSkip, false, &tlsrpt.Result{})
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permanent, _, _, secodeOpt, remoteIP, errmsg, firstLine, moreLines, _, ok = deliverHost(nqlog, resolver, dialer, ourHostname, transportName, h, enforceMTASTS, haveMX, origNextHopAuthentic, origNextHop, expandedNextHopAuthentic, expandedNextHop, &m, smtpclient.TLSSkip, false, &tlsrpt.Result{})
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}
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if ok {
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@ -334,7 +340,7 @@ func deliverDirect(qlog mlog.Log, resolver dns.Resolver, dialer smtpclient.Diale
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permanent = true
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}
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fail(ctx, qlog, m, backoff, permanent, remoteMTA, secodeOpt, errmsg, moreLines)
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fail(ctx, qlog, m, backoff, permanent, remoteMTA, secodeOpt, errmsg, firstLine, moreLines)
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return
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}
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@ -354,7 +360,7 @@ func deliverDirect(qlog mlog.Log, resolver dns.Resolver, dialer smtpclient.Diale
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// The returned hostResult holds TLSRPT reporting results for the connection
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// attempt. Its policy type can be the zero value, indicating there was no finding
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// (e.g. internal error).
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func deliverHost(log mlog.Log, resolver dns.Resolver, dialer smtpclient.Dialer, ourHostname dns.Domain, transportName string, host dns.IPDomain, enforceMTASTS, haveMX, origNextHopAuthentic bool, origNextHop dns.Domain, expandedNextHopAuthentic bool, expandedNextHop dns.Domain, m *Msg, tlsMode smtpclient.TLSMode, tlsPKIX bool, recipientDomainResult *tlsrpt.Result) (permanent, tlsDANE, badTLS bool, secodeOpt string, remoteIP net.IP, errmsg string, moreLines []string, hostResult tlsrpt.Result, ok bool) {
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func deliverHost(log mlog.Log, resolver dns.Resolver, dialer smtpclient.Dialer, ourHostname dns.Domain, transportName string, host dns.IPDomain, enforceMTASTS, haveMX, origNextHopAuthentic bool, origNextHop dns.Domain, expandedNextHopAuthentic bool, expandedNextHop dns.Domain, m *Msg, tlsMode smtpclient.TLSMode, tlsPKIX bool, recipientDomainResult *tlsrpt.Result) (permanent, tlsDANE, badTLS bool, secodeOpt string, remoteIP net.IP, errmsg, firstLine string, moreLines []string, hostResult tlsrpt.Result, ok bool) {
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// About attempting delivery to multiple addresses of a host: ../rfc/5321:3898
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tlsRequiredNo := m.RequireTLS != nil && !*m.RequireTLS
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@ -388,7 +394,7 @@ func deliverHost(log mlog.Log, resolver dns.Resolver, dialer smtpclient.Dialer,
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// Open message to deliver.
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f, err := os.Open(m.MessagePath())
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if err != nil {
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return false, false, false, "", nil, fmt.Sprintf("open message file: %s", err), nil, hostResult, false
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return false, false, false, "", nil, fmt.Sprintf("open message file: %s", err), "", nil, hostResult, false
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}
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msgr := store.FileMsgReader(m.MsgPrefix, f)
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defer func() {
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@ -519,7 +525,7 @@ func deliverHost(log mlog.Log, resolver dns.Resolver, dialer smtpclient.Dialer,
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log.Info("verified tls is required, but destination has no usable dane records and no mta-sts policy, canceling delivery attempt to host")
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metricRequireTLSUnsupported.WithLabelValues("nopolicy").Inc()
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// Resond with proper enhanced status code. ../rfc/8689:301
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return false, tlsDANE, false, smtp.SePol7MissingReqTLS, remoteIP, "missing required tls verification mechanism", nil, hostResult, false
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return false, tlsDANE, false, smtp.SePol7MissingReqTLS, remoteIP, "missing required tls verification mechanism", "", nil, hostResult, false
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}
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// Dial the remote host given the IPs if no error yet.
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@ -547,7 +553,7 @@ func deliverHost(log mlog.Log, resolver dns.Resolver, dialer smtpclient.Dialer,
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metricConnection.WithLabelValues(result).Inc()
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if err != nil {
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log.Debugx("connecting to remote smtp", err, slog.Any("host", host))
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return false, tlsDANE, false, "", remoteIP, fmt.Sprintf("dialing smtp server: %v", err), nil, hostResult, false
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return false, tlsDANE, false, "", remoteIP, fmt.Sprintf("dialing smtp server: %v", err), "", nil, hostResult, false
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}
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var mailFrom string
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@ -638,7 +644,7 @@ func deliverHost(log mlog.Log, resolver dns.Resolver, dialer smtpclient.Dialer,
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deliveryResult = "error"
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}
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if err == nil {
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return false, tlsDANE, false, "", remoteIP, "", nil, hostResult, true
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return false, tlsDANE, false, "", remoteIP, "", "", nil, hostResult, true
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} else if cerr, ok := err.(smtpclient.Error); ok {
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// If we are being rejected due to policy reasons on the first
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// attempt and remote has both IPv4 and IPv6, we'll give it
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@ -654,9 +660,9 @@ func deliverHost(log mlog.Log, resolver dns.Resolver, dialer smtpclient.Dialer,
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secode = smtp.SePol7MissingReqTLS
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metricRequireTLSUnsupported.WithLabelValues("norequiretls").Inc()
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}
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return permanent, tlsDANE, errors.Is(cerr, smtpclient.ErrTLS), secode, remoteIP, cerr.Error(), cerr.MoreLines, hostResult, false
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return permanent, tlsDANE, errors.Is(cerr, smtpclient.ErrTLS), secode, remoteIP, cerr.Error(), cerr.Line, cerr.MoreLines, hostResult, false
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} else {
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return false, tlsDANE, errors.Is(cerr, smtpclient.ErrTLS), "", remoteIP, err.Error(), nil, hostResult, false
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return false, tlsDANE, errors.Is(cerr, smtpclient.ErrTLS), "", remoteIP, err.Error(), "", nil, hostResult, false
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}
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}
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31
queue/dsn.go
31
queue/dsn.go
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@ -30,7 +30,7 @@ var (
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)
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)
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func deliverDSNFailure(ctx context.Context, log mlog.Log, m Msg, remoteMTA dsn.NameIP, secodeOpt, errmsg string, moreLines []string) {
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func deliverDSNFailure(ctx context.Context, log mlog.Log, m Msg, remoteMTA dsn.NameIP, secodeOpt, errmsg string, smtpLines []string) {
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const subject = "mail delivery failed"
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message := fmt.Sprintf(`
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Delivery has failed permanently for your email to:
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@ -42,12 +42,15 @@ No further deliveries will be attempted.
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Error during the last delivery attempt:
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%s
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`, m.Recipient().XString(m.SMTPUTF8), strings.Join(append([]string{errmsg}, moreLines...), "\n\t"))
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`, m.Recipient().XString(m.SMTPUTF8), errmsg)
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if len(smtpLines) > 0 {
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message += "\nFull SMTP response:\n\n\t" + strings.Join(smtpLines, "\n\t") + "\n"
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}
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deliverDSN(ctx, log, m, remoteMTA, secodeOpt, errmsg, true, nil, subject, message)
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deliverDSN(ctx, log, m, remoteMTA, secodeOpt, errmsg, smtpLines, true, nil, subject, message)
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}
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func deliverDSNDelay(ctx context.Context, log mlog.Log, m Msg, remoteMTA dsn.NameIP, secodeOpt, errmsg string, moreLines []string, retryUntil time.Time) {
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func deliverDSNDelay(ctx context.Context, log mlog.Log, m Msg, remoteMTA dsn.NameIP, secodeOpt, errmsg string, smtpLines []string, retryUntil time.Time) {
|
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// Should not happen, but doesn't hurt to prevent sending delayed delivery
|
||||
// notifications for DMARC reports. We don't want to waste postmaster attention.
|
||||
if m.IsDMARCReport {
|
||||
|
|
@ -66,16 +69,19 @@ If these attempts all fail, you will receive a notice.
|
|||
Error during the last delivery attempt:
|
||||
|
||||
%s
|
||||
`, m.Recipient().XString(false), strings.Join(append([]string{errmsg}, moreLines...), "\n\t"))
|
||||
`, m.Recipient().XString(false), errmsg)
|
||||
if len(smtpLines) > 0 {
|
||||
message += "\nFull SMTP response:\n\n\t" + strings.Join(smtpLines, "\n\t") + "\n"
|
||||
}
|
||||
|
||||
deliverDSN(ctx, log, m, remoteMTA, secodeOpt, errmsg, false, &retryUntil, subject, message)
|
||||
deliverDSN(ctx, log, m, remoteMTA, secodeOpt, errmsg, smtpLines, false, &retryUntil, subject, message)
|
||||
}
|
||||
|
||||
// We only queue DSNs for delivery failures for emails submitted by authenticated
|
||||
// users. So we are delivering to local users. ../rfc/5321:1466
|
||||
// ../rfc/5321:1494
|
||||
// ../rfc/7208:490
|
||||
func deliverDSN(ctx context.Context, log mlog.Log, m Msg, remoteMTA dsn.NameIP, secodeOpt, errmsg string, permanent bool, retryUntil *time.Time, subject, textBody string) {
|
||||
func deliverDSN(ctx context.Context, log mlog.Log, m Msg, remoteMTA dsn.NameIP, secodeOpt, errmsg string, smtpLines []string, permanent bool, retryUntil *time.Time, subject, textBody string) {
|
||||
kind := "delayed delivery"
|
||||
if permanent {
|
||||
kind = "failure"
|
||||
|
|
@ -115,9 +121,11 @@ func deliverDSN(ctx context.Context, log mlog.Log, m Msg, remoteMTA dsn.NameIP,
|
|||
} else {
|
||||
status += "0.0"
|
||||
}
|
||||
diagCode := errmsg
|
||||
if !dsn.HasCode(diagCode) {
|
||||
diagCode = status + " " + errmsg
|
||||
|
||||
// ../rfc/3461:1329
|
||||
var smtpDiag string
|
||||
if len(smtpLines) > 0 {
|
||||
smtpDiag = "smtp; " + strings.Join(smtpLines, " ")
|
||||
}
|
||||
|
||||
dsnMsg := &dsn.Message{
|
||||
|
|
@ -138,8 +146,9 @@ func deliverDSN(ctx context.Context, log mlog.Log, m Msg, remoteMTA dsn.NameIP,
|
|||
FinalRecipient: m.Recipient(),
|
||||
Action: action,
|
||||
Status: status,
|
||||
StatusComment: errmsg,
|
||||
RemoteMTA: remoteMTA,
|
||||
DiagnosticCode: diagCode,
|
||||
DiagnosticCode: smtpDiag,
|
||||
LastAttemptDate: *m.LastAttempt,
|
||||
WillRetryUntil: retryUntil,
|
||||
},
|
||||
|
|
|
|||
|
|
@ -581,7 +581,7 @@ func deliver(log mlog.Log, resolver dns.Resolver, m Msg) {
|
|||
transport, ok = mox.Conf.Static.Transports[m.Transport]
|
||||
if !ok {
|
||||
var remoteMTA dsn.NameIP // Zero value, will not be included in DSN. ../rfc/3464:1027
|
||||
fail(ctx, qlog, m, backoff, false, remoteMTA, "", fmt.Sprintf("cannot find transport %q", m.Transport), nil)
|
||||
fail(ctx, qlog, m, backoff, false, remoteMTA, "", fmt.Sprintf("cannot find transport %q", m.Transport), "", nil)
|
||||
return
|
||||
}
|
||||
transportName = m.Transport
|
||||
|
|
@ -692,10 +692,10 @@ func deliver(log mlog.Log, resolver dns.Resolver, m Msg) {
|
|||
if transport.Socks != nil {
|
||||
socksdialer, err := proxy.SOCKS5("tcp", transport.Socks.Address, nil, &net.Dialer{})
|
||||
if err != nil {
|
||||
fail(ctx, qlog, m, backoff, false, dsn.NameIP{}, "", fmt.Sprintf("socks dialer: %v", err), nil)
|
||||
fail(ctx, qlog, m, backoff, false, dsn.NameIP{}, "", fmt.Sprintf("socks dialer: %v", err), "", nil)
|
||||
return
|
||||
} else if d, ok := socksdialer.(smtpclient.Dialer); !ok {
|
||||
fail(ctx, qlog, m, backoff, false, dsn.NameIP{}, "", "socks dialer is not a contextdialer", nil)
|
||||
fail(ctx, qlog, m, backoff, false, dsn.NameIP{}, "", "socks dialer is not a contextdialer", "", nil)
|
||||
return
|
||||
} else {
|
||||
dialer = d
|
||||
|
|
|
|||
|
|
@ -78,7 +78,7 @@ func deliverSubmit(qlog mlog.Log, resolver dns.Resolver, dialer smtpclient.Diale
|
|||
requireTLS := m.RequireTLS != nil && *m.RequireTLS
|
||||
if requireTLS && (tlsMode != smtpclient.TLSRequiredStartTLS && tlsMode != smtpclient.TLSImmediate || !tlsPKIX) {
|
||||
errmsg = fmt.Sprintf("transport %s: message requires verified tls but transport does not verify tls", transportName)
|
||||
fail(ctx, qlog, m, backoff, true, dsn.NameIP{}, smtp.SePol7MissingReqTLS, errmsg, nil)
|
||||
fail(ctx, qlog, m, backoff, true, dsn.NameIP{}, smtp.SePol7MissingReqTLS, errmsg, "", nil)
|
||||
return
|
||||
}
|
||||
|
||||
|
|
@ -115,7 +115,7 @@ func deliverSubmit(qlog mlog.Log, resolver dns.Resolver, dialer smtpclient.Diale
|
|||
}
|
||||
qlog.Errorx("dialing for submission", err, slog.String("remote", addr))
|
||||
errmsg = fmt.Sprintf("transport %s: dialing %s for submission: %v", transportName, addr, err)
|
||||
fail(ctx, qlog, m, backoff, false, dsn.NameIP{}, "", errmsg, nil)
|
||||
fail(ctx, qlog, m, backoff, false, dsn.NameIP{}, "", errmsg, "", nil)
|
||||
return
|
||||
}
|
||||
dialcancel()
|
||||
|
|
@ -171,7 +171,7 @@ func deliverSubmit(qlog mlog.Log, resolver dns.Resolver, dialer smtpclient.Diale
|
|||
qlog.Errorx("establishing smtp session for submission", err, slog.String("remote", addr))
|
||||
errmsg = fmt.Sprintf("transport %s: establishing smtp session with %s for submission: %v", transportName, addr, err)
|
||||
secodeOpt = smtperr.Secode
|
||||
fail(ctx, qlog, m, backoff, false, remoteMTA, secodeOpt, errmsg, smtperr.MoreLines)
|
||||
fail(ctx, qlog, m, backoff, false, remoteMTA, secodeOpt, errmsg, smtperr.Line, smtperr.MoreLines)
|
||||
return
|
||||
}
|
||||
defer func() {
|
||||
|
|
@ -196,7 +196,7 @@ func deliverSubmit(qlog mlog.Log, resolver dns.Resolver, dialer smtpclient.Diale
|
|||
if err != nil {
|
||||
qlog.Errorx("opening message for delivery", err, slog.String("remote", addr), slog.String("path", p))
|
||||
errmsg = fmt.Sprintf("transport %s: opening message file for submission: %v", transportName, err)
|
||||
fail(ctx, qlog, m, backoff, false, dsn.NameIP{}, "", errmsg, nil)
|
||||
fail(ctx, qlog, m, backoff, false, dsn.NameIP{}, "", errmsg, "", nil)
|
||||
return
|
||||
}
|
||||
msgr = store.FileMsgReader(m.MsgPrefix, f)
|
||||
|
|
@ -239,7 +239,7 @@ func deliverSubmit(qlog mlog.Log, resolver dns.Resolver, dialer smtpclient.Diale
|
|||
permanent = smtperr.Permanent
|
||||
secodeOpt = smtperr.Secode
|
||||
errmsg = fmt.Sprintf("transport %s: submitting email to %s: %v", transportName, addr, err)
|
||||
fail(ctx, qlog, m, backoff, permanent, remoteMTA, secodeOpt, errmsg, smtperr.MoreLines)
|
||||
fail(ctx, qlog, m, backoff, permanent, remoteMTA, secodeOpt, errmsg, smtperr.Line, smtperr.MoreLines)
|
||||
return
|
||||
}
|
||||
qlog.Info("delivered from queue with transport")
|
||||
|
|
|
|||
|
|
@ -161,7 +161,7 @@ type Error struct {
|
|||
// SMTP command causing failure.
|
||||
Command string
|
||||
// For errors due to SMTP responses, the full SMTP line excluding CRLF that caused
|
||||
// the error. Typically the last line read.
|
||||
// the error. First line of a multi-line response.
|
||||
Line string
|
||||
// Optional additional lines in case of multi-line SMTP response. Most SMTP
|
||||
// responses are single-line, leaving this field empty.
|
||||
|
|
|
|||
Loading…
Reference in a new issue