
POSTED: Mar 4, 2009 7:37 PM (GMT)
Can you tell us whether this is an Exchange email account? If so what version of Exchange? If an Exchange account are there mailbox size quotas? Also is this a direct connection or a pop3 connection? Are they downloading to a pst file?

POSTED: Feb 11, 2012 8:06 PM (GMT)
Also having the problem but with Outlook 2003 and turning off the authentification works for a while. 2 new noteboooks running fine on Vista and Outlook 2003. Only that 3 original pc cannot send out msg in outlook. Tried everything. Agree with Don Williams that its Outlookâs problem and not OS, Router or ISP or anything else. Will fiddle around the outward mail server port in outlook 2morow. Will update if it works.
refer also to this site it may help you solve your problem..

POSTED: Feb 11, 2012 8:07 PM (GMT)



















