Email notification
 

I have used AT&T u-verse email for my email notification. I no longer have AT&T and would like to use my Hotmail account for my email notifications, but with Hotmail I get an error messages that says "an invalid username/password or security certificate was used for authentication" I know the username and password is correct for my Hotmail account, but I'm not sure what they meant by invalid security certificate.

Incoming mail (POP3): pop3.live.com
My server enquires encrypted connection (SSL) is checked

Outgoing mail (SMTP): smtp.live.com
encrypted connection type (SSL)

My server require authentication is checked

Incoming mail (POP3): 995
Outgoing mail (SMTP): 587