X-Cart forums - Check MX for email addresses

Although a good idea initially I ran into a few unplanned problems with this mod. So I've discontinued using it.

1. Some idiot domain owners don't have MX records but a lot of SMTP servers (Postfix) will try to deliver to the domain A record if no MX record is listed.
e.g. it will try the IP for example.com if there is no MX record for example.com.

2. It was checking for the MX record when the client wanted to be removed. If it wasn't found it would reject their email as not being a valid one in the database.