Exchange 2003 / ICMP

Posted on 2006-05-16
Medium Priority
Last Modified: 2009-07-29
I'm just setting up an Exchange Server 2003 in house and I've setup NAT on the firewall to forward port 25.  It has been about 5 days since I had our MX updated, but it seems like we're only getting 50% of our mail.

Do I need to have ICMP turned on?  I've noticed that many mail servers out on the net reply to ping tests.  Is it possible that some e-mail servers are queueing our mail because they fail a ping test to our server and think its not available?
Question by:blotto99
1 Comment
LVL 35

Accepted Solution

rakeshmiglani earned 2000 total points
ID: 16690418
You can check your smtp domain name using the following sites. if they report no issues then the configuration should be fine


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