Outlook not connecting to mail


Good Day.

I have a client for whom I am designing a website. Now I moved his domain from one ISP/host provider to another.
He deleted his email account in Outlook and tried to add it again, but it keeps failing. I tried both pop3 and imap, but none works:

Here's the tricky part: I used the EXACT same settings in Outlook on MY PC, and it connects fine, everytime. Why wouldn't his Outlook connect to the mail server, but mine does? I don't suppose it is a firewall since he has 2 other mail accounts on Outlook that works fine(the 2 other accounts are on a different domain.) As I said, I tried deleting the account and added it again, but nothing (I do NOT use SSL and I also made sure the settings was not for secure mail.

Any ideas?

Thank you!

Does the failure show up at the "Test Account Settings" point during setup?

If so, I'd suggest altering the server port ID numbers and authentication procedures. You might also find out if there are multiple mail servers maintained by the web host - try an alternative one, especially to send mail. I found that, depending upon the outgoing system I worked on, I had to use a different GoDaddy outgoing server with different authentication protocol ("smtpauth" instead of "smtpout"). I have the occasional problem when traveling that I'm unable to send emails from Outlook through the hotel's system server.