I have an SBS 2003 server. We use this exchange server to send and receive email for 2 different domains. xxx.com & yyy.com. The DNS service I use has 1 MX record for each FQDN pointing to the exchange server. Mail.xxx.com = xxx.168.1.2 and mail.yyy.com also points to the exchange server at xxx.168.1.2. I had AT&T (our DSL provider) create a reverse DNS entry for me@.xxx,com, Not problem sending and receiving using this domain name, however, email@example.com email gets rejected sometimes because of no reverse DNS entry for mail.yyy.com. AT&T tells me that only 1 FQDN can resolve to 1 IP address. A strict 1 for 1 lookup. How do I work around this problem?
Thanks for your help