When I connect with the issues, like server timeout or something, the maillog shows only this for my IP address:
Nov 22 12:45:44 mail postfix/smtpd[28952]: warning: 12.34.56.78: hostname 12.34.56.78.hns.net verification failed: Name or service not known
Nov 22 12:45:44 mail postfix/smtpd[28952]: connect from unknown[12.34.56.78]
Nov 22 12:45:44 mail postfix/smtpd[28960]: warning: 12.34.56.78: hostname 12.34.56.78.hns.net verification failed: Name or service not known
Nov 22 12:45:44 mail postfix/smtpd[28960]: connect from unknown[12.34.56.78]
Nov 22 12:45:44 mail postfix/smtpd[28954]: warning: 12.34.56.78: hostname 12.34.56.78.hns.net verification failed: Name or service not known
Nov 22 12:45:44 mail postfix/smtpd[28954]: connect from unknown[12.34.56.78]
Nov 22 12:45:44 mail postfix/smtpd[28958]: warning: 12.34.56.78: hostname 12.34.56.78.hns.net verification failed: Name or service not known
Nov 22 12:45:44 mail postfix/smtpd[28958]: connect from unknown[12.34.56.78]
Nov 22 12:45:44 mail postfix/smtpd[28956]: warning: 12.34.56.78: hostname 12.34.56.78.hns.net verification failed: Name or service not known
Nov 22 12:45:44 mail postfix/smtpd[28956]: connect from unknown[12.34.56.78]
Nov 22 12:45:45 mail postfix/smtpd[28960]: disconnect from unknown[12.34.56.78]
Nov 22 12:45:45 mail postfix/smtpd[28958]: disconnect from unknown[12.34.56.78]
Nov 22 12:45:45 mail postfix/smtpd[28952]: disconnect from unknown[12.34.56.78]
Nov 22 12:45:45 mail postfix/smtpd[28956]: disconnect from unknown[12.34.56.78]
Nov 22 12:45:45 mail postfix/smtpd[28954]: disconnect from unknown[12.34.56.78]
But when I connect successfully for all my email accounts, it shows the above, plus other logs. The othe rlogs are missing when it fails:
Nov 22 12:49:04 mail postfix/smtpd[30137]: warning: 12.34.56.78: hostname 12.34.56.78.hns.net verification failed: Name or service not known
Nov 22 12:49:04 mail postfix/smtpd[30137]: connect from unknown[12.34.56.78]
Nov 22 12:49:04 mail postfix/smtpd[30135]: warning: 12.34.56.78: hostname 12.34.56.78.hns.net verification failed: Name or service not known
Nov 22 12:49:04 mail postfix/smtpd[30135]: connect from unknown[12.34.56.78]
Nov 22 12:49:04 mail postfix/smtpd[30139]: warning: 12.34.56.78: hostname 12.34.56.78.hns.net verification failed: Name or service not known
Nov 22 12:49:04 mail postfix/smtpd[30139]: connect from unknown[12.34.56.78]
Nov 22 12:49:04 mail postfix/smtpd[30141]: warning: 12.34.56.78: hostname 12.34.56.78.hns.net verification failed: Name or service not known
Nov 22 12:49:04 mail postfix/smtpd[30141]: connect from unknown[12.34.56.78]
Nov 22 12:49:04 mail postfix/smtpd[30133]: warning: 12.34.56.78: hostname 12.34.56.78.hns.net verification failed: Name or service not known
Nov 22 12:49:04 mail postfix/smtpd[30133]: connect from unknown[12.34.56.78]
Nov 22 12:49:04 mail postfix/smtpd[30139]: disconnect from unknown[12.34.56.78]
Nov 22 12:49:04 mail postfix/smtpd[30135]: disconnect from unknown[12.34.56.78]
Nov 22 12:49:04 mail postfix/smtpd[30141]: disconnect from unknown[12.34.56.78]
Nov 22 12:49:04 mail postfix/smtpd[30133]: disconnect from unknown[12.34.56.78]
Nov 22 12:49:04 mail postfix/smtpd[30137]: disconnect from unknown[12.34.56.78]
Nov 22 12:49:17 mail dovecot: auth: Debug: client in: AUTH#0111#011PLAIN#011service=imap#011secured#011lip=87.65.43.21#011rip=12.34.56.78#011lport=143#011rport=59962#011resp=
Nov 22 12:49:17 mail dovecot: auth: Debug: pam(laurence.mydomain,12.34.56.78): lookup service=dovecot
Nov 22 12:49:17 mail dovecot: auth: Debug: pam(laurence.mydomain,12.34.56.78): #1/1 style=1 msg=Password:
Nov 22 12:49:17 mail dovecot: auth: Debug: passwd(laurence.mydomain,12.34.56.78): lookup
Nov 22 12:49:17 mail dovecot: imap-login: Login: user=<laurence.mydomain>, method=PLAIN, rip=12.34.56.78, lip=87.65.43.21, mpid=30891, TLS
Nov 22 12:49:17 mail dovecot: auth: Debug: client in: AUTH#0111#011PLAIN#011service=imap#011secured#011lip=87.65.43.21#011rip=12.34.56.78#011lport=143#011rport=59965#011resp=
Nov 22 12:49:17 mail dovecot: auth: Debug: pam(alerts.mydomain2,12.34.56.78): lookup service=dovecot
Nov 22 12:49:17 mail dovecot: auth: Debug: pam(alerts.mydomain2,12.34.56.78): #1/1 style=1 msg=Password:
Nov 22 12:49:17 mail dovecot: auth: Debug: passwd(alerts.mydomain2,12.34.56.78): lookup
Nov 22 12:49:17 mail dovecot: imap-login: Login: user=<alerts.mydomain2>, method=PLAIN, rip=12.34.56.78, lip=87.65.43.21, mpid=30893, TLS
Nov 22 12:49:18 mail dovecot: auth: Debug: client in: AUTH#0111#011PLAIN#011service=imap#011secured#011lip=87.65.43.21#011rip=12.34.56.78#011lport=143#011rport=59966#011resp=
Nov 22 12:49:18 mail dovecot: auth: Debug: pam(info.mydomain2,12.34.56.78): lookup service=dovecot
Nov 22 12:49:18 mail dovecot: auth: Debug: pam(info.mydomain2,12.34.56.78): #1/1 style=1 msg=Password:
Nov 22 12:49:18 mail dovecot: auth: Debug: passwd(info.mydomain2,12.34.56.78): lookup
Nov 22 12:49:18 mail dovecot: imap-login: Login: user=<info.mydomain2>, method=PLAIN, rip=12.34.56.78, lip=87.65.43.21, mpid=30895, TLS
Nov 22 12:49:18 mail dovecot: auth: Debug: client in: AUTH#0111#011PLAIN#011service=imap#011secured#011lip=87.65.43.21#011rip=12.34.56.78#011lport=143#011rport=59970#011resp=
Nov 22 12:49:18 mail dovecot: auth: Debug: pam(info.mydomain,12.34.56.78): lookup service=dovecot
Nov 22 12:49:18 mail dovecot: auth: Debug: pam(info.mydomain,12.34.56.78): #1/1 style=1 msg=Password:
Nov 22 12:49:18 mail dovecot: auth: Debug: passwd(info.mydomain,12.34.56.78): lookup
Nov 22 12:49:18 mail dovecot: imap-login: Login: user=<info.mydomain>, method=PLAIN, rip=12.34.56.78, lip=87.65.43.21, mpid=30897, TLS
Nov 22 12:49:18 mail dovecot: auth: Debug: client in: AUTH#0111#011PLAIN#011service=imap#011secured#011lip=87.65.43.21#011rip=12.34.56.78#011lport=143#011rport=59971#011resp=
Nov 22 12:49:18 mail dovecot: auth: Debug: pam(laurence.mydomain2,12.34.56.78): lookup service=dovecot
Nov 22 12:49:18 mail dovecot: auth: Debug: pam(laurence.mydomain2,12.34.56.78): #1/1 style=1 msg=Password:
Nov 22 12:49:18 mail dovecot: auth: Debug: passwd(laurence.mydomain2,12.34.56.78): lookup
Nov 22 12:49:18 mail dovecot: imap-login: Login: user=<laurence.mydomain2>, method=PLAIN, rip=12.34.56.78, lip=87.65.43.21, mpid=30899, TLS