network_biopair_interop

[brainocide]

Ive found this warning in maillog & zimbra.log in mailbox server & mta server

Jun 29 11:31:03 smtp postfix/smtpd[3965]: warning: network_biopair_interop: error reading 5 bytes from the network: Connection reset by peer

So, what is it actuallly?

[cayaraa]

I noticed this as well after upgrading to 6.0.7. Looks like its happening twice, 1 and 4 am.

[phoenix]

Here's one explanation: Postfix MTA user discussion

[brainocide]

But it's happen a day after upgrade from 6.0.3 to 6.0.7.1 on early this week

[infosyst]

We have started getting this message as well. It started immediately after we upgraded from 6.0.4 to 6.0.7 last week. It only happens when messages are sent from one of our internal servers, but it happens on every single message from that server. We never saw this error before the upgrade. The messages still come through ok, so it is basically just an annoying error that I would like to get rid of.