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Feature: Add option to disable SMTP reverse DNS (rDNS) lookup (#230)

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Ralph Slooten
2024-01-21 09:05:08 +13:00
parent 3f98ac5087
commit 6725db4fa5
4 changed files with 21 additions and 11 deletions
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4
cmd/root.go
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@@ -105,6 +105,7 @@ func init() {
rootCmd.Flags().BoolVar(&config.SMTPStrictRFCHeaders, "smtp-strict-rfc-headers", config.SMTPStrictRFCHeaders, "Return SMTP error if message headers contain <CR><CR><LF>")
rootCmd.Flags().IntVar(&config.SMTPMaxRecipients, "smtp-max-recipients", config.SMTPMaxRecipients, "Maximum SMTP recipients allowed")
rootCmd.Flags().StringVar(&config.SMTPAllowedRecipients, "smtp-allowed-recipients", config.SMTPAllowedRecipients, "Only allow SMTP recipients matching a regular expression (default allow all)")
rootCmd.Flags().BoolVar(&smtpd.DisableReverseDNS, "smtp-disable-rdns", smtpd.DisableReverseDNS, "Disable SMTP reverse DNS lookups")
rootCmd.Flags().StringVar(&config.SMTPRelayConfigFile, "smtp-relay-config", config.SMTPRelayConfigFile, "SMTP configuration file to allow releasing messages")
rootCmd.Flags().BoolVar(&config.SMTPRelayAllIncoming, "smtp-relay-all", config.SMTPRelayAllIncoming, "Relay all incoming messages via external SMTP server (caution!)")
@@ -175,6 +176,9 @@ func initConfigFromEnv() {
if len(os.Getenv("MP_SMTP_ALLOWED_RECIPIENTS")) > 0 {
config.SMTPAllowedRecipients = os.Getenv("MP_SMTP_ALLOWED_RECIPIENTS")
}
if getEnabledFromEnv("MP_SMTP_DISABLE_RDNS") {
smtpd.DisableReverseDNS = true
}
// Relay server config
config.SMTPRelayConfigFile = os.Getenv("MP_SMTP_RELAY_CONFIG")