"On behalf of User C" sounds normal and expected, given that C is a delegate for B.

It also sounds like D is A's delegate and getting A's meeting responses.

--
Sue Mosher, Outlook MVP
Author of Configuring Microsoft Outlook 2003
http://www.turtleflock.com/olconfig/index.htm
and Microsoft Outlook Programming - Jumpstart for
Administrators, Power Users, and Developers
http://www.outlookcode.com/jumpstart.aspx

"Russ" wrote in message oups.com...
I have a strange problem whe

User A sends a meeting invite to User B.

User B has a secretary (User C) who has permissions to send on behalf
of User B

When User B's secretary accepts User A's meeting invite, another user
(User D) gets User B's response to the meeting invite, and the email
says "On behalf of User C".

Any ideas?