0x800CCC0F Error with Outlook 2002

C

CJ

This problem began about a week ago. I have Outlook 2002
installed on both my laptop and desktop. When accessing
my email account with the desktop computer, I get the
following error message:

Task 'AT&T Business - Primary - Sending' reported error
(0x800CCC0F) : 'The connection to the server was
interrupted. If this problem continues, contact your
server administrator or Internet service provider (ISP).
The server responded: 550 unauthorized interface for
xx.xx.xxx.xx '

(x's replace my IP address).

When accessing my email with my laptop, NO error message
is received -- the problem ONLY exists on my desktop
computer. Outlook is configured identically on both
computers and I have them connected to the same network
and ISP to access the internet (for the purpose of
troubleshooting). With both computers side-by-side, I can
access my email with NO error message with my laptop, but
when I access my email with my desktop, I get the
0x800CCC0F error message -- this is a consistently
repeatable problem.

It appears, for whatever reason, that on my desktop
computer the error message is being created when Outlook
attempts to SEND an email to the email server, EVEN WHEN
THERE IS NO EMAIL TO BE SENT (EMPTY OUTBOX). Email is
being received OK from this account and I am NOT
attempting to send any email through this account.
However, the Task List on the Outlook 2002 Send/Receive
Progress window clearly shows the error is generated by an
attempt to SEND email using this account.

It appears that Outlook on my desktop thinks that there is
mail to be sent using my AT&T account, even with an empty
Outbox, and every time I Send/Receive mail to this account
using my desktop computer, an error message is generated.

What's the fix???

Summary of facts:

1. With Outlook 2002 installed and configured identically
on 2 separate computers (laptop and desktop -- same OS) on
the same network and using the same ISP, only the desktop
is getting the error message.

2. It is a sending error (verified by the Task pane in
the Outlook Send/Receive Progress window), even though the
Outbox is empty.

3. It began about a week ago -- no changes in computer
configuration or software was made immediately prior to
the problem.
 
J

Jeff Stephenson [MSFT]

It may be that Outlook is trying to send a read-receipt, which doesn't show
up in your Outbox, and AT&T is rejecting it. Try setting up authentication
to your outgoing server (click on "More Settings..." on your account, go to
the "Outgoing Server" tab) - the error message you're getting implies that
maybe AT&T won't allow you to send a read-receipt without authenticating.
It's worth a try...
 

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