I found a small ISP that will not deliver my mail unless they can verify that my email address exists. I've found the edit (A) records, (MX) records & (CNAME)settings. I'm pretty sure this has something to do with the MX, but I'm not sure what to put in the three boxes to get my email address listed. Here are the boxes to create a new MX record.
Hostname is the domain you registered domain.tld. In the absence of a MX record your mail would be handled by the maschine that name points to. With an MX record you can specify that your mail should be handled by a different maschine. When there is more than one MX record remote mail servers will contact the one with with the lowest preference. If that fails they will try the one with the next-heigher one.
So the MX record present will cause your mail to be delivered to mail.domain.com instead of domain.com.
Thanks for the reply. Maybe I didn't explain my problem right, sorry. Some ISP's try to verify that an email address exist BEFORE they will accept the mail for delivery. In other words, they check an email from firstname.lastname@example.org to see if it's a valid email address. This is done with some kind of reverse lookup to doe.com. If my domain was doe.com, how to I tell my domain to tell other ISP's that john is a vaid email address within my domain.