John Murray wrote:

Helping a friend with their Outlook 2003 e-mail, using ATT DSL. The
computer is a Windows XP SP2 machine, and the problems we're having
is that it cannot receive e-mail. The same settings in Outlook
Express do work, but nothing I've been able to think of so far has
helped -- new Identity, re-enter the account from scratch, etc. Here
is the entire error message:
Message number 1 could not be retrieved. Account: 'acctname',
Server 'pop.att.yahoo.com', Protocol: POP3, Server Response:
'-ERR problem retrieving message.', Port: 995, Secure(SSL):
Yes, Server Error: 0x800CCC90, Error Number 0x800420CD

Spent over an hour with ATT DSL tech support, but they were not able
to find a solution. Also, webmail does work.

Whether or not webmail works has no bearing on the issue. Enable diagnostic
logging in Outlook and see what's transpiring between it and the server.
http://support.microsoft.com/kb/831053/en-us
--
Brian Tillman