Knowledgebase: SMTP Server (Outgoing)
Can I use my ISP's SMTP server?
Posted by Roy Petersen on Feb-15-2007 12:16 PM
Certainly, the choice is yours.
With your account you have the ability to use your ISP's SMTP server, or the one provided with your account. Using the one included with your account allows you to send all of your outgoing e-mail from your domain name rather than through your Internet Service Provider, giving you a more seamless mail flow, although it can be a little slower to send mail.

If you prefer to use your ISP, however, just use their information for the SMTP server in your mail application.