This is normal behavior for a custom message form. See http://www.slipstick.com/dev/messageform.htm for other known quirks and limitations.

Signature
Sue Mosher, Outlook MVP
Outlook and Exchange solutions at http://www.slipstick.com
Author of
Microsoft Outlook Programming: Jumpstart
for Administrators, Power Users, and Developers
http://www.slipstick.com/books/jumpstart.htm
> We have created a custom form for sending emails and have noticed that when
> the meail message is read by the recipient, the icon next to the message in
[quoted text clipped - 4 lines]
>
> Tyson Ackland