Needs Outgoing Server Requires Authentication checked.
0x800CCC0E
Port 255? Should be port 25 or 26.
0x800CCC92
Possibly not using full email address as username. Possibly needs to reset password.
0x800CCC0D
Could be misspelled, could be propagating/unregistered, could be server down. Best solution is to use correct domain and spell correctly, and if still not working then use the server's IP instead.
0x800CCC18
User has Log on using Secure Password Authentication checked. Needs to uncheck SPA.
0x800CCC0E
Incoming port is wrong. Should be 110 for POP3 and 143 for IMAP.
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