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Exchange 2007 server -  My users are getting message delay for many domains

Posted on 2014-01-07
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Last Modified: 2014-01-27
My users are getting many notifications that we e-mail delivery is being delayed to aol, att and cox accounts.

i would like to know what can be causing this

thanks for your help,

Carla
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Question by:teamwork123
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Gareth Gudger earned 500 total points
ID: 39763134
Do the messages ever get delivered? Or, are they eventually getting bounced or dropped?

Have you checked the Queues in the Exchange 2007 Exchange Management Console to determine what the retry error says?

I am guessing you might have gotten blacklisted. Check to see if your organization is listed as a spammer.
http://mxtoolbox.com/blacklists.aspx

It could also be items such as reverse IP lookup, where the IP the mail server sends from needs to resolve to your MX record.
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Author Comment

by:teamwork123
ID: 39763303
My Domain is not blacklisted ,  the queue is showing about 180 messages retrying for AOL.com
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Expert Comment

by:Gareth Gudger
ID: 39763322
If you double click on the queue and view the individual messages do any of the messages have error codes on them. Example 5.5.3...blah blah
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Author Comment

by:teamwork123
ID: 39766568
Yes this is the error code : Last Error: 400 4.4.7 Message delayed


another error : 451-4.4.0 "primary address responded 554 - RTB:BB aol postmaster. I already submmited a ticket with them and they say we are not on their black list

i'm having issues sending to ATT, comcast, sbcglobal.net and cox.net

thanks,

Carla
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LVL 31

Expert Comment

by:Gareth Gudger
ID: 39766794
Are you using a smart-host at all to send mail?

Open Exchange Management Console
Expand Organization Configuration
Select Hub Transport and select the Send Connectors tab.
Right-click on the existing Send Connector, select Properties
Go to the Network tab.

Anything configured here?
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