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Warning When Distribution List Contains External Address

Posted on 2014-09-03
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Last Modified: 2014-09-08
In Exchange 2013 is there a way to warn users when sending a message using a distribution list that contains an external Email address (contact)?
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Question by:NetAdam12
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Jamie McKillop earned 500 total points
ID: 40303240
Hello,

Yes, you can do this using MailTips (http://technet.microsoft.com/en-us/library/jj649091%28v=exchg.150%29.aspx). The External Users MailTips will warn users when they add recipients that are external or add distribution groups that contain external users. This will warn them for every external recipient though. If you want to limit the warning to just one or more groups, you can create a custom MailTip that is applied to just those groups. You would have to set this individually for each group and it would not be automatically applied to any new groups you create or if an external recipient is added to a group on which the MailTip hasn't been configured.

-JJ
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Author Closing Comment

by:NetAdam12
ID: 40309853
Thank you for your help.  This was the type of solution we needed.

Terry
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