Tag Archives: Postfix

Postfix and lost connection after DATA

Trouble with immature firewalls and postfix. I run into trouble with one postfix server. This server is located behind a firewall and I got the error postfix/smtpd[1434]: lost connection after DATA from … in the mail logs. Debugging postfix with debug <>IP-address>> shows nothing unusually. So it must be another reason for that. Searching around… Read More »