When I started the Lotus domino server, this is what reflected when starting the router service:
"Router : Internet SMTP host mail in domain touristcenter.com.ph DNS: Non-existent domain".
After this I can't send outgoing email but I can receive incoming mails. I already talked to the ISP, he did ping the server, it was ok, also he telnet port 25 and it was also fine. What seems to be the problem?
Are you verifying the IP addresses of senders? This can cause your problem. Also, is that domain known to your server, if it is internal to your firewall?
This was first published in January 2002