I get the following popup error when attempting to send (or attempting to open) an email message in Outlook 2003 with three attachements.

(-2147352567, 'Exception occured.', (4096, 'Microsoft Office Outlook', 'Cannot save the attachment.', None,0,-2147024888), None)

If I turn off scan outgoing email in ClamWin preferences, I can send the email.

Two of the attachments are mail messages. One of the mail messages has an embedded picture (a Prt Scr screen shot). The third attachment is a Powerpoint file with one slide containing a Prt Scr image, which is the largest of the three attachments (about 300KB).

OS is WinXP Professional SP2. Both the OS and Outlook 2003 have all the latest updates.

I think you should look it in the settings of your AV program, it's something like you just have to put a check somewhere or on the contrary remove it.