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How do I find email messages using old domain name?

Posted on 2015-02-05
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Hello,

I need assistance in finding any email traffic that is being used by and old domain in our company. The company I now work for has an old domain name (MyOldDomain.net) that they no longer use in production and the director wants everything to use MyDomain.com.

The users had the SMTP addresses with the old domain name removed and up to two years ago all applications and devices used emails with the old domain name. I have updated as many of the applications and devices I can find but I need help in finding any email traffic for @MyOldDomain.net.

The message tracking in the EMC are not wildcard friendly and my PowerShell attempts have come up dry.

Thank you.
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Question by:matt160
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rgorman earned 500 total points
ID: 40591880
If all the mail is routed through your Exchange server, I would probably create a transport rule that looks for @myolddomain.net in the email and bcc it to a specific recipient who can monitor for that email usage.  I just have Exchange 2013 so I can't comment on 2010 specifically but I see in ours I can one of the criteria is "sender address includes" so just put in the old domain and choose what to do with it.
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by:matt160
ID: 40592020
That worked, thank you.

Just to let others know what I did. EMC > Organization Configuration > Hub Transport > Transport Rules tab and create two new rules since it uses "and" and not "or". Rule #1 Conditions: when the From address contains MyOldDomain.net; Actions Blind carbon copy (BCC) the message address: user@MyDomain.com. And for Rule #2 Conditions: when a recipient's address contains MyOldDomain.net; Actions Blind carbon copy (BCC) the message address: user@MyDomain.com.

Be sure the domain for the Action is MyOldDomain.net and not @MyOldDomain.net.
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