When attempting to forward SMTP mail from an internal Exchange 2003 server via an SMTP connector to the Astaro firewall, the message will sit in the Exchange SMTP queue for at least ten minutes trying to connect w/ the Astaro box. Sometimes it will eventually deliver, other times the Exchange queue will sit in retry. The following event entries are generated:
On Exchange: The semaphore timeout period has expired
On Astaro: SMTP Connection from lost while reading message data
Telnetting to 25 works from E2K3 to Astaro and if I DON'T use Astaro as a gateway (using Exchange to deliver SMTP directly via DNS), it works fine.
Has anyone come across this?
Chris
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