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Code Issues Releases Activity

Chore: Add smtpd server logging in the CLI (#347)

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This commit is contained in:
Ralph Slooten
2024-08-17 14:15:53 +12:00
parent 5fc025b1a5
commit ba42cac2ad
1 changed files with 23 additions and 1 deletions
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24
server/smtpd/smtpd.go
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@@ -21,6 +21,8 @@ import (
var (
// DisableReverseDNS allows rDNS to be disabled
DisableReverseDNS bool
errorResponse = regexp.MustCompile(`^[45]\d\d `)
)
// MailHandler handles the incoming message to store in the database
@@ -38,7 +40,7 @@ func Store(origin net.Addr, from string, to []string, data []byte) (string, erro
msg, err := mail.ReadMessage(bytes.NewReader(data))
if err != nil {
logger.Log().Errorf("[smtpd] error parsing message: %s", err.Error())
logger.Log().Warnf("[smtpd] error parsing message: %s", err.Error())
stats.LogSMTPRejected()
return "", err
}
@@ -210,7 +212,17 @@ func Listen() error {
return listenAndServe(config.SMTPListen, mailHandler, authHandler)
}
// Translate the smtpd verb from READ/WRITE to from/to
func verbLogTranslator(verb string) string {
if verb == "READ" {
return "from"
}
return "to"
}
func listenAndServe(addr string, handler smtpd.MsgIDHandler, authHandler smtpd.AuthHandler) error {
smtpd.Debug = true // to enable Mailpit logging
srv := &smtpd.Server{
Addr: addr,
MsgIDHandler: handler,
@@ -221,6 +233,16 @@ func listenAndServe(addr string, handler smtpd.MsgIDHandler, authHandler smtpd.A
AuthRequired: false,
MaxRecipients: config.SMTPMaxRecipients,
DisableReverseDNS: DisableReverseDNS,
LogRead: func(remoteIP, verb, line string) {
logger.Log().Debugf("[smtpd] %s %s: %s", verbLogTranslator(verb), remoteIP, line)
},
LogWrite: func(remoteIP, verb, line string) {
if errorResponse.MatchString(line) {
logger.Log().Warnf("[smtpd] %s %s: %s", verbLogTranslator(verb), remoteIP, line)
} else {
logger.Log().Debugf("[smtpd] %s %s: %s", verbLogTranslator(verb), remoteIP, line)
}
},
}
if config.Label != "" {