I'm trying to add a send/receive external account to outlook.com. I can access the pop3 mail box of my
external email account successfully. However when I try to configure the smtp server I get the
above error message. The server settings I am using work fine in windows live mail 2012 and
also mozilla thunderbird and previously did with outlook express and windows mail.
 If I try to import the settings from live mail, the settings displayed are correct, but I still get the
same error.

Judging from the plethora of hits I find relating to this or a similar issue this has to be an
Outlook.com problem. The only solutions offered seem to be requests to try Live Mail to
see if that works with the same settings. Well it does just fine. So how can we progress to a solution ?