published mail server behind 2006 cannot telnet out on port 25?
- From: Les Caudle <DotNetWannabe@xxxxxxxxxxxxxxxx>
- Date: Fri, 18 May 2007 12:46:04 -0500
I published an Exchange 2003 mail server behind an ISA 2006 firewall.
From the outside, POP3 works, and SMTP can be used to send an email to aninternal address.
But, the Exchange Server cannot send emails to the outside world, they just
stack up in the queue.
I notice that I cannot telnet to port 25 of an external SMTP server from the
Exchange Server.
I tried adding an outbound SMTP filter from the Exchange computer's ip to
External, but this had no effect.
I don't see anything denied in ISA's monitoring. I see the SMTP Initiated
Connection, and SMTP close connection. Nothing is denied.
I'm running the Exchange box as just a NAT client. Firwall client is not
installed.
What am I missing?
BTW - one other strange anomaly. I can ping www.news.com from the Exchange box,
and the 1st ping will generally go thru, but the next 3 (in the ping request)
always fail. I can ping from the ISA box without problem.
--
Thanks in advance, Les Caudle
.
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