I am running Debian 12 on my VM in the cloud. Lately I've been finding postfix unavailable, while it's been rock-solid for years. When I login, the postfix@-.service service is failed, without any indication of why in the journal. I did find some errors in the mail.log with regards to its auth through dovecot. unknown[196.251.92.14] ehlo=1 mail=1 rcpt=0/1 rset=1 quit=1 commands=4/5 2025-03-02T00:33:47.783614+00:00 nicodemus dovecot: imap-login: Disconnected: Connection closed: SSL_accept() failed: error:0A000102:SSL routines::unsupported protocol (no auth attempts in 0 secs): user=<>, rip=198.235.24.247, lip=104.236.37.12, TLS handshaking: SSL_accept() failed: error:0A000102:SSL routines::unsupported protocol, session=</2NkMVEv+MvG6xj3> 2025-03-02T00:44:28.124562+00:00 nicodemus dovecot: auth-worker(34426): Error: conn unix:auth-worker (pid=34425,uid=111): auth-worker<1>: pam(tes [ at ] digitaltorque [ dot ] ca,5.253.59.133): pam_authenticate() failed: Authentication failure (/etc/pam.d/smtp missing?) 2025-03-02T00:44:30.127626+00:00 nicodemus postfix/submission/smtpd[34423]: warning: unknown[5.253.59.133]: SASL PLAIN authentication failed: (reason unavailable), sasl_username=tes [ at ] digitaltorque [ dot ] ca 2025-03-02T00:58:27.910529+00:00 nicodemus dovecot: imap-login: Disconnected: Connection closed: read(size=1026) failed: Connection reset by peer (no auth attempts in 0 secs): user=<>, rip=174.112.31.149, lip=104.236.37.12, session=<kVWdiVEvXLCucB+V> 2025-03-02T01:05:45.458090+00:00 nicodemus dovecot: auth-worker(34803): Error: conn unix:auth-worker (pid=34800,uid=111): auth-worker<1>: pam(msoulier-livejournal [ at ] digitaltorque [ dot ] ca,61.169.54.150): pam_authenticate() failed: Authentication failure (/etc/pam.d/smtp missing?) So it seems like something is triggering this behaviour. I followed a suggestion online and rebooted the vps with "init 6" which seems to bring things back up cleanly. I'm confused though. None of this was a problem in the past, it just worked. Appreciate some help understanding this. Thanks, Mike
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