This is what I get from that command $ postconf -d | grep 5xx lmtp_skip_5xx_greeting = yes smtp_skip_5xx_greeting = yes [2025-08-18 15:51:41 root@cmcora1 ~] although I don't know what the greeting has to do with it. Also $ postconf -d | grep soft lmtp_sasl_auth_soft_bounce = yes notify_classes = resource, software smtp_sasl_auth_soft_bounce = yes smtpd_soft_error_limit = 10 soft_bounce = no [2025-08-18 15:55:18 root@cmcora1 ~] Other than soft bounce do any of these explain the behavior?
You asked for logs? Here's a sample from maillog: Aug 5 03:48:44 cmcora1 postfix/smtp[845428]: 6901520BA9CB: host mx1.mxge.comcast.net[96.102.18.146] refused to talk to me: 554 resimta-c2p-560126.sys.comcast.net resimta-c2p-560126.sys.comcast.net 129.80.158.55 found on one or more DNSBLs, see https://postmaster.comcast.net/smtp-error-codes.php#BL000001 But perhaps even more convincing: $ telnet 96.103.145.163 25 Trying 96.103.145.163... Connected to 96.103.145.163. Escape character is '^]'. 554 resimta-a2p-651038.sys.comcast.net resimta-a2p-651038.sys.comcast.net 129.80.158.55 found on one or more DNSBLs, see https://postmaster.comcast.net/smtp-error-codes.php#BL000001 Connection closed by foreign host. [2025-08-01 16:53:29 root@cmcora1 ~] The default behavior seems to be to retry every 15 min or 5 days? Wietse Venema via Postfix-users writes: > Don Cohen via Postfix-users: > > > > My understanding was that when an attempt to send resulted in > > a 5xx response code it should not be retried. > > Unless softbounce is yes. > > > > postconf confirms that softbounce = no but the log shows > > attempts to resend messages that return code 554. > > > > I want these not to be retried. Any ideas? > > You gave no concrete logging info, so here are some ideas. > > $ postconf -d | grep 5xx > lmtp_skip_5xx_greeting = yes > smtp_skip_5xx_greeting = yes > > Wietse > _______________________________________________ > Postfix-users mailing list -- postfix-users@postfix.org > To unsubscribe send an email to postfix-users-le...@postfix.org _______________________________________________ Postfix-users mailing list -- postfix-users@postfix.org To unsubscribe send an email to postfix-users-le...@postfix.org
