Hi Alec,
mydomain.com -> IP ADDRESS of web server www.mydomain.com -> IP ADDRESS of web server mail.mydomain.com -> IP ADDRESS of exchange Server www.mydomain.com -> mail.mydomain.com
This is an MX record, right?Have you tried sending mail to 'user@xxxxxxxxxxxxxxxx'? Does the M Sex Change server know it should accept mail for mydomain.com and www.mydomain.com?
Has anyone got any ideas why the above would not work?
Perhaps you should add an MX record for 'mydomain.com' aswell: mydomain.com -> mail.mydomain.com. HTH... Nico