I've found a few posts related to this problem but haven't found any definite answers on any of them. I try to complete the setup and Windows Mail says this:

Your server has unexpectedly terminated the connection. Possible causes for this include server problems, network problems, or a long period of inactivity. Account: 'mail.poolmechanix.com', Server: 'mail.poolmechanix.com', Protocol: POP3, Port: 110, Secure(SSL): No, Socket Error: 10053, Error Number: 0x800CCC0F

My domain is poolmechanix.com if that's relevant. I've put in my full email address as user name.
Not sure what else to do.