I was searching for something and noticed several 'can't send mail' questions. I had that problem and is now solved. I thought I should share the solution(s) and you guys might find them applicable.
1. Google search for error 0x800ccc0f (or similar) directs you to
2. Bill Gates knowledge base kbid=813514. The simple solution that worked for me among the 8 or so offered was fixing MTU in the router.
Send mail - Send mail-MS knowledge base
Edited-Repaired link that would not copy/paste properly
Edited for correction on the error code
Edited by JEservices, 09 November 2004 - 03:09 PM.