Jürgen Mell wrote:
In the logs the problem looks like this:
Mar 17 20:11:32 pluto postfix/smtpd[8647]: < mforward.dtag.de[194.25.242.123]: QUIT Mar 17 20:11:32 pluto postfix/smtpd[8647]: > mforward.dtag.de[194.25.242.123]: 221 Bye Mar 17 20:11:32 pluto postfix/smtpd[8647]: disconnect from mforward.dtag.de[194.25.242.123] Mar 17 20:11:32 pluto postfix/smtpd[8647]: connect from mforward.dtag.de[194.25.242.123] Mar 17 20:11:32 pluto postfix/smtpd[8647]: > mforward.dtag.de[194.25.242.123]: 220 pluto.br-tech.de ESMTP Postfix Mar 17 20:11:32 pluto postfix/smtpd[8647]: watchdog_pat: 0x80a18b8 Mar 17 20:12:20 pluto postfix/smtpd[8639]: > mforward.dtag.de[194.25.242.123]: 421 pluto.br-tech.de Error: timeout exceeded Mar 17 20:12:20 pluto postfix/smtpd[8639]: timeout after END-OF-MESSAGE from mforward.dtag.de[194.25.242.123] Mar 17 20:12:20 pluto postfix/smtpd[8639]: disconnect from mforward.dtag.de[194.25.242.123] Mar 17 20:12:20 pluto postfix/smtpd[8639]: connect from mforward.dtag.de[194.25.242.123] Mar 17 20:12:20 pluto postfix/smtpd[8639]: > mforward.dtag.de[194.25.242.123]: 220 pluto.br-tech.de ESMTP Postfix Mar 17 20:12:20 pluto postfix/smtpd[8639]: watchdog_pat: 0x80a18b8 Mar 17 20:12:35 pluto postfix/smtpd[8649]: > mforward.dtag.de[194.25.242.123]: 421 pluto.br-tech.de Error: timeout exceeded Mar 17 20:12:35 pluto postfix/smtpd[8649]: timeout after END-OF-MESSAGE from mforward.dtag.de[194.25.242.123] Mar 17 20:12:35 pluto postfix/smtpd[8649]: disconnect from mforward.dtag.de[194.25.242.123] Mar 17 20:12:35 pluto postfix/smtpd[8649]: connect from mforward.dtag.de[194.25.242.123] Mar 17 20:12:35 pluto postfix/smtpd[8649]: > mforward.dtag.de[194.25.242.123]: 220 pluto.br-tech.de ESMTP Postfix Mar 17 20:12:35 pluto postfix/smtpd[8649]: watchdog_pat: 0x80a18b8 Mar 17 20:12:35 pluto postfix/smtpd[8649]: smtp_get: EOF Mar 17 20:12:35 pluto postfix/smtpd[8649]: lost connection after CONNECT from mforward.dtag.de[194.25.242.123] Mar 17 20:12:35 pluto postfix/smtpd[8649]: disconnect from mforward.dtag.de[194.25.242.123] Mar 17 20:12:35 pluto postfix/smtpd[8649]: connect from mforward.dtag.de[194.25.242.123] Mar 17 20:12:35 pluto postfix/smtpd[8649]: > mforward.dtag.de[194.25.242.123]: 220 pluto.br-tech.de ESMTP Postfix Mar 17 20:12:35 pluto postfix/smtpd[8649]: watchdog_pat: 0x80a18b8 Mar 17 20:12:35 pluto postfix/smtpd[8649]: smtp_get: EOF
From this point on, none of the smtpd daemons got a connection.
it looks as though the remote server stops sending further messages and just times out. Further connections from the remote server don't send any data. On a server with enough smtpd processes configured, this wouldn't be a problem. Did you see Mark Samendinger's reply? John
It's a bit of a problem right now. All the mails have been sent and right now everything works well again. I will try to reproduce the problem on the weekend, for the next outage will come for sure...
Thanks,
Jürgen