Except that this is sending to our internal Exchange 2003 server, not outgoing.
Here's the scenario: We have 2 servers that act as incoming mail server. One is to receive mails from the Internet, a Barracuda box. This box is running well. Another box, this is the problematic one, is to relay mails from our web applications on the DMZ to our internal exchange server. It is running CentOS 5, Postfix version 2.3.3 Release 2.1.el5_2 (from the rpm package installed). The box works well sending out emails to the Internet, but relaying mails inside, we get a few "(delivery temporarily suspended: conversation with x.x.x.x [x.x.x.x] timed out while sending end of data -- message may be sent more than once)". The thing is, it doesn't happen all the time. 1 email can be stuck in the queue with that error message for a while before it gets delivered, while another email (same content, to same address) gets through pretty much straight away. There's an ASA 5500 inbetween, but the SMTP fixup protocol has been turned off, and our other incoming mail server has been relaying mails inside with no issue, so I was wondering if the good people on the list can shine a light towards my issue? Thanks :) ------------------------------------------------- Please consider the environment before you print
