Invalid SMTP address characters

  • From: "Chris Wall" <Chris.Wall@xxxxxxxxxxxxxxxxxxx>
  • To: "[ExchangeList]" <exchangelist@xxxxxxxxxxxxx>
  • Date: Wed, 2 Nov 2005 10:00:47 -0500

Hello all,


   Running Exchange 2003 Pre SP1...


   I have several users that have (for years) had an apostrophe in their
primary SMTP address, and they have had no problems. An Example would be
Chris.D'Wall@xxxxxxxxxxxxxxxxxxxx  Notice the ' in the example.


   All of a sudden, 5 days ago, all users with apostrophes in their SMTP
address have been unable to send external or receive external e-mails.
To fix the issue I have had to set their primary SMTP address to not
include the Apostrophe.  Using the example above, the new primary would
be Chris.DWall@xxxxxxxxxxxxxxxxxxxx  


   This would allow mail to flow from and to the users.


    Now the weird part - if I leave the Chris.D'Wall@xxxxxxxxxxxxxxxxxxx
address as an alias - external senders can now deliver mail to either


Any ideas on this one?




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