Ok, we have a website that mails off notifications when somebody orders something. However lately the messages haven't been going through. This is on a win 2k server using IIS, latest service packs and everything. This is the error I get in the syslog under SMTPSVC

Message delivery to the remote host domain 'adomainwehost.com' failed for the following reason: The connection was dropped by the remote host.

We do host DNS for the domain it is trying to contact and all the records are correct. Anybody have any ideas on this? Let me know if you need more information.

Thanks,
Greg