E-Mail Problems

By net-tech ·
I am running exchange server 2003 its seem that sometimes users can not send email to certain addresses including AOL and Comcast and some others I have not the slightest clue why this is happening any help would be great
Thanks alot

this is the error messeage

Your message did not reach some or all of the intended recipients.

The folowing recipients(s) could not be reached

Tanya on 12/13/2006
Could not deliver the message in the time limit specifided. Please retry or contact your administrator
< #4.4.7>

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by Teaching Information Systems In reply to E-Mail Problems

You need to get on AOL?s whitelist.

In general, AOL will bounce a lot of mail.

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exchange not forwarding aol emails

by jhowl In reply to E-Mail Problems

I am having the same problem in the above FAQ as of 05/10/2007 or so Can't figure out why How idi you correct your problem before

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I am having the same the exact same problem

by theunrealgladiator In reply to exchange not forwarding a ...

I support several small businesses and recently one of them changed thier internet connection and received new IP addresses. Since then they can not send emails to AOL or Comcast. I have spoken with AOL's community action team. They are responcible for handling the white list. They assured me that since the emails do not have a rejection notice attached to them that they did not block it. The only strange thing that I have noticed is that when I open up the Server 2003 DNS cache I noticed that all of AOL's MX records are not there. I am still waiting to hear back from Comcast. The message that I see in the outbound mail queue within the exchange system manage is "the connection was dropped due an SMTP protocol event sink".

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Same problem

by oneappleman In reply to I am having the same the ...

Has anyone figured out how to fix this?

The only thing that I can think of is that AOL and Comcast are doing a reverse lookup before accepting the emails. And if so I am having a problem with reverse DNS. Because of the company we have our T1 through AT&T will not host reverse DNS for our IP address so I have had to go with an 3rd party reverse DNS host. From this is what I get.

Banner: Microsoft ESMTP MAIL Service, Version: 6.0.3790.3959 ready at Mon, 18 Feb 2008 19:33:29 +0000 [31 ms]
Connect Time: 0.031 seconds - Good
Transaction Time: 10.25 seconds - Not good!
Relay Check: OK - This server is not an open relay.
Rev DNS Check: OK - resolves to
GeoCode Info: Geocoding server is unavailable
Session Transcript:
501 5.5.4 Invalid Address [5031 ms]
250 Hello [IPAddress] [31 ms]
250 2.1.0 OK [31 ms]
550 5.7.1 Unable to relay for [5062 ms]
221 2.0.0 Service closing transmission channel [31 ms]

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