We're getting many lost connections from our new phone systems voicemail to email service. The actual voicemails and other emails send OK but we also see constant hits anywhere from every minute to 8 minutes on the mail server from the phone system that are lost connections. The phone system is an NEC SV9100. Sender and Postfix are on the same local vlan. A snippet from the logs: =============================================== Sep 11 09:41:46 example00 postfix/smtpd[10259]: connect from sv9100.example.com[10.6.600.11] Sep 11 09:41:46 example00 postfix/smtpd[10259]: 8AF0A403E24: client=sv9100.example.com[10.6.600.11] Sep 11 09:41:46 example00 postfix/cleanup[10262]: 8AF0A403E24: message-id=<> Sep 11 09:42:03 example00 postfix/smtpd[10259]: lost connection after DATA (66836 bytes) from sv9100.example.com[10.6.600.11] Sep 11 09:42:03 example00 postfix/smtpd[10259]: disconnect from sv9100.example.com[10.6.600.11] helo=1 mail=1 rcpt=1 data=0/1 commands=3/4 Sep 11 09:43:11 example00 postfix/smtpd[10259]: connect from sv9100.example.com[10.6.600.11] Sep 11 09:43:11 example00 postfix/smtpd[10259]: 519CA403E24: client=sv9100.example.com[10.6.600.11] Sep 11 09:43:11 example00 postfix/cleanup[10262]: 519CA403E24: message-id=<> Sep 11 09:43:28 example00 postfix/smtpd[10259]: lost connection after DATA (66621 bytes) from sv9100.example.com[10.6.600.11] Sep 11 09:43:28 example00 postfix/smtpd[10259]: disconnect from sv9100.example.com[10.6.600.11] helo=1 mail=1 rcpt=1 data=0/1 commands=3/4 Sep 11 09:50:06 example00 postfix/smtpd[10321]: connect from sv9100.example.com[10.6.600.11] Sep 11 09:50:06 example00 postfix/smtpd[10321]: 58CD6403E24: client=sv9100.example.com[10.6.600.11] Sep 11 09:50:06 example00 postfix/cleanup[10324]: 58CD6403E24: message-id=<> Sep 11 09:50:23 example00 postfix/smtpd[10321]: lost connection after DATA (66767 bytes) from sv9100.example.com[10.6.600.11] Sep 11 09:50:23 example00 postfix/smtpd[10321]: disconnect from sv9100.example.com[10.6.600.11] helo=1 mail=1 rcpt=1 data=0/1 commands=3/4 Sep 11 09:50:34 example00 postfix/smtpd[10321]: connect from sv9100.example.com[10.6.600.11] Sep 11 09:50:34 example00 postfix/smtpd[10321]: 4E943403E24: client=sv9100.example.com[10.6.600.11] Sep 11 09:50:34 example00 postfix/cleanup[10324]: 4E943403E24: message-id=<> Sep 11 09:50:52 example00 postfix/smtpd[10321]: lost connection after DATA (66828 bytes) from sv9100.example.com[10.6.600.11] Sep 11 09:50:52 example00 postfix/smtpd[10321]: disconnect from sv9100.example.com[10.6.600.11] helo=1 mail=1 rcpt=1 data=0/1 commands=3/4 =============================================== Could this be some configuration in Postfix? Or is it entirely the senders doing? Anything I should be looking at?
Thank you, Chris
