Set your mail server to the host name for SMTP/POP3/IMAP (instead of domain.com) and then make sure that your mail client is using the following ports for SSL:

SMTP - 465
POP3 - 995
IMAP - 993

As always you want to make sure that your account name is user@domain.com (or user+domain.com) and that you are using authentication on your SMTP server.