[pfx] Re: relaying a 550 yields a defer
Wietse Venema via Postfix-users <[email protected]>
| Newsgroups | gmane.mail.postfix.user |
|---|---|
| Message-ID | <[email protected]> |
Viktor Dukhovni via Postfix-users: > On Thu, Apr 09, 2026 at 04:49:38PM -0700, Randy Bush via Postfix-users wrote: > > > but then postfix seems to be telling the sender to retry later 450. > > > > 2026-04-09T23:15:36.547760+00:00 m0 postfix/smtpd[4892]: NOQUEUE: reject: RCPT from mail-australiaeastazrln10220002.outbound.protection.outlook.com[52.103.200.2]: 450 4.1.1 <[email protected]>: Recipient address rejected: unverified address: delivery temporarily suspended: connect to psg.com[147.28.0.62]:25: Connection timed out; from=<[email protected]> to=<[email protected]> proto=ESMTP helo=<SY8PR01CU002.outbound.protection.outlook.com> > > Consider changing the safety-net default > > unverified_recipient_reject_code = 450 > > to: > > unverified_recipient_reject_code = 550 It's replying with 4XX because of: delivery temporarily suspended: connect to psg.com[1 47.28.0.62]:25: Connection timed out When that error expires from the queue manager 'dead host' list, the setting unverified_recipient_reject_code comes into play. Wietse _______________________________________________ Postfix-users mailing list -- [email protected] To unsubscribe send an email to [email protected]