install mail server(sendmail) problem?
 

Hi! I hope install two mail servers(difference hosts name, ie. a.abc.com and b.abc.com) but using same domain name(ie. @abc.com). Is it possible to do it? I mean I hope both of e-mail servers can using @abc.com send and received e-mail over internet. What should I do on it? The user account don't need sync. on both server(can separate to do it)!!!

If you need it for just simple redundancy you can just list them in order of preference in your MX records in your DNS zone files for abc.com. Just give the most preferred mail handler the lower number.

If you are looking for load balancing... I'm sure there's a way... <shrug>

problem?
 

I already add MX record in my DNS file. It's also my aim of this project. But I really need install two mail servers for difference department using and these department have many many people(This is my main point why I should install two mail server). And I hope any user send and receive mail are same domain name(@abc.com), even they are belongs "a" mail server or "b" mail server. I hope get more information how to do it! Thanks for your advice!!!