We just switched over to Verizon as our DSL carrier and are starting to have some odd issues. I am sure it has something to do with the DNS settings an reverse lookups for the remote mail server in that ours is registering with the internal name (netbios_name.domain.com) and the IP address is registering as the big long nasty thing from Verizon (see below) and the two are not matching. Have you seen this and do you have any suggestions?
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<netbios_name.domain.com #5.7.1 smtp;554 5.7.1 <verizon static IP>: Client host rejected: Please use your ISPs Mail Servers. Goodbye. CLIENT>
Do I just need to add the mail.domain.com to the smtp virtual server setting? (Exchange 2003, spt2)