I ran into this before and after we combed through the AR Email Engine and subsequent process, we could not find anything different. We start a conversation with our Exchange Admin about possible Exchange issues and it ended up being a bug in Exchange 5.5 as listed in the KB entry below. Not sure what version of Exchange you use, but this may help you in your research.
Here are a couple of KB entries from http://support.microsoft.com that explain how users can receive multiple messages (266371) *Exchange 5.5* Users in Distro. lists can receive multiple messages (329043) - *Exchange 2000* A secondary SMTP mail recipient may receive duplicate e-mail messages in a mixed Microsoft Exchange Server organization (304122) - *Exchange 2000* If you send an e-mail message to a user who is a member of a distribution list and you include that same distribution list in the Cc box, the user may receive duplicate e-mail messages. 895857) - *Exchange 2003* Describes issues that may occur when a computer that is running Exchange Server is behind a firewall and the firewall affects the flow of SMTP mail. ... Duplicate e-mail messages are sent to a recipient (159181) - Messages sent to Microsoft Mail recipients through the Microsoft Exchange Internet Mail Connector (IMC) can result in duplicate messages Don't be too impress, my Wife is an Exchange Admin and sent me these entries. Gary _______________________________________________________________________________ UNSUBSCRIBE or access ARSlist Archives at www.arslist.org ARSlist:"Where the Answers Are"
