From MSDN:
0x800CCC78 SMTP_REJECTED_SENDER Unknown sender. This is caused by
having the incorrect e-mail address in the Reply-To field.
Type 0x800CCC78 in search at Microsoft site, and you'll find a few
possible reasons. E.g., SMTP server require authorization
--
Kathleen Orland - MVP Outlook
Outlook Tips:
http://www.outlook-tips.net/
http://www.howto-outlook.com/
"Murph" wrote:
> Hi
> I have an invisible email in my Outbox that is preventing me sending any
> legitimate emails. There were 3 initially. Two of them were Read Receipt
> messages that I have managed to remove using the MDBVU32.EXE program, but
> this third one does not show up in the Root Folder.
> Any suggestions welcome.
> David
>