AEvets posted on another thread...
Don't know if you are still having cox mail problems buy I finally figured mine out and thought I would let you know what i did. You have to have your cox email and password entered under the outgoing mail server. go to your mail account thru preferences and click on the outoging server you have set up, this will bring up " edit server list " , then under advanced, and authentication ( which was set to none on my computer ) change the authentication to password. then you can enter your email address and password for your account and it should work. At least it did for me. Hope this helps
AND YES it just worked for me. Mail had been fine until suddenly it was not using 10.8.2
Connection doctor was showing all green lights, but until I used this fix nothing worked. As soon as I added the Cox email and password info, all worked.
Good luck to you!
And thank you AEvets
I do so appreciate the suggestions folks, but regretfully, in both suggestions - nothing changed the situation.
Connection Doctor reports that the account in question cannot connect to the SMTP server. Of course I've checked the user name and password in every instance. It's the SAME information used onthe MacPro running Snow Leopard - so it should work, right???
I've checked firewall settings, did the whole Disk Utility to verify/correct permissions - rebooted the Mac, tried it again - nothin'
I've tried it with SSL on and OFF. I've tried various sockets.
Could this have anything to do with iCloud not being configured? Initially, I did have iCloud turned-on - but a few of my many emails accounts got all weird, duplicated, etc... So I turned-off iCloud until I can sort-out this one bug.
I'm going to pry-open the Snow Leopard MacPro's keychain and make 100% certain I'm using the exact same login credentials - and make certain this isn't an error code ID-10-T - because if I do any more head-scratching on this one folks, I'll be bald by New Year's...
Very sound advice markwmsn - and I'll verify those settings first thing in the AM. I will conduict a thorough comparison of all settings, user names and passwords on ALL accounts, and I'm not above deleting the entire email account (at this point) and rebuilding it from scratch - on this new MacPro...
Fact is, on this new Mac, that particular account has not worked once, so it's not like I'll lose a history of emails.
Thanks for the tip and for reading my post here.