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Merge commit 'feb8e6c37947b21baaa7dcf724ade0f2435a8280'

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github PR #152, also for issue #149
This commit is contained in:
Mechiel Lukkien 2024-04-13 13:36:11 +02:00
commit 1ea851bb53
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1 changed files with 10 additions and 4 deletions
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14
queue/direct.go
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@ -647,7 +647,8 @@ func deliverHost(log mlog.Log, resolver dns.Resolver, dialer smtpclient.Dialer,
err = fmt.Errorf("storing recipient domain tls status: %w", err)
}
}
if err != nil {
inspectError := func(err error) error {
if cerr, ok := err.(smtpclient.Error); ok {
// If we are being rejected due to policy reasons on the first
// attempt and remote has both IPv4 and IPv6, we'll give it
@ -655,6 +656,7 @@ func deliverHost(log mlog.Log, resolver dns.Resolver, dialer smtpclient.Dialer,
// the other family perhaps is not.
if cerr.Permanent && m0.Attempts == 1 && dualstack && strings.HasPrefix(cerr.Secode, "7.") {
log.Debugx("change error type from permanent to transient", err, slog.Any("host", host), slog.Any("secode", cerr.Secode))
cerr.Permanent = false
}
// If server does not implement requiretls, respond with that code. ../rfc/8689:301
@ -662,9 +664,13 @@ func deliverHost(log mlog.Log, resolver dns.Resolver, dialer smtpclient.Dialer,
cerr.Secode = smtp.SePol7MissingReqTLS30
metricRequireTLSUnsupported.WithLabelValues("norequiretls").Inc()
}
err = cerr
return cerr
}
return deliverResult{err: err}
return err
}
if err != nil {
return deliverResult{err: inspectError(err)}
}
// SMTP session is ready. Finally try to actually deliver.
@ -704,7 +710,7 @@ func deliverHost(log mlog.Log, resolver dns.Resolver, dialer smtpclient.Dialer,
resps, err := sc.DeliverMultiple(ctx, mailFrom, rcpts, size, msg, has8bit, smtputf8, m0.RequireTLS != nil && *m0.RequireTLS)
if err != nil && len(resps) == len(msgResps) {
// If error and it applies to all recipients, return a single error.
return deliverResult{err: err}
return deliverResult{err: inspectError(err)}
}
var ntodo []*msgResp
for i, mr := range todo[:n] {