Error: "Unable to send the message ... 0x800CCC78"

[John Hoffmann]

No info in MS KnowledgeBase about this error message
summarized in Subject Line in MS Outlook 2003 I am
getting when trying to send an outbound e-mail message.

Comcast.net does not know why I keep getting. I can
receive inbound e-mail just fine. All e-mail account
settings verified and re-verified.

Any ideas?

Thanks.

John Hoffmann

 

[Suzanne]

Does the outgoing SMTP server require authentication? If
so you need to check the box in tools - email accounts -
change/view - more settings - outgoing server

 

[John Hoffmann]

Suzanne,

Good idea but, unfortunately, we've tried that as well.

JHH

 

[Jeff Stephenson [MSFT]]

Could you turn on diagnostic logging (see
http://support.microsoft.com/default.aspx?scid=kb;en-us;Q300479) and post
the OPMLog.log file (preferably as an attachment)
after you get this error?

 

[Michael]

I have the same problem with Outlook 2000 and comcast. Did you ever find a solution?