i am facing a problem with my sendmail server. i have two PCs both with linux with dns and sendmail configured. both dns represent different domains i.e. example.com and ashish.com. now when i try to send mail from ashish.com to example.com , it doesn't go hut within their own domains it goes. i have made an entry in /etc/mail/local-host-names file but in dns i don't made any entry of other mail exchanger records in both dns. is it required there. but both servers can ping identify each other with their host names.......plz help me to how to send mail from one domain to another.