Let me explain this. The server name has got nothing to do to where the email will go. Let's say for examply you send a mail to robert.com. Now your exchange server will request a dns server for the mx records of robert.com, and he got these results MX 10 A.com MX 20 B.com This means that the first server your exchange will try to contact is a.com and the exchange sends the mail to that server. Now if a.com if offline, it tries to connect to b.com. If it doesn't connect with b.com server as well, it will retry to resend it at a later stage. Therefore if you've got 2 exchange servers with 2 domain names it is very simple to set up the dns. If server a.com hosts bbbb.com and server b.com hosts aaaa.com all you have to do is for domain aaaa.com set the mx record 10 pointing to server b.com and vice versa for the other domain. -----Original Message----- From: Sulis [mailto:sulis@xxxxxxxxxxxxxxxxxxxx] Sent: Wednesday, June 26, 2002 12:50 PM To: [ExchangeList] Subject: [exchangelist] RE: DNS & Mail Server http://www.MSExchange.org/ - Re-Vamped! you mean, the mail will find the server with priority search on MX record, until find match domain. in may case below, the mail will go to B.com with aaa.com without bounce back e-mail cause the domain not found in A.com with bbb.com ? ----- Original Message ----- From: Robert Abela <mailto:robert@xxxxxxx> To: [ExchangeList] <mailto:exchangelist@xxxxxxxxxxxxx> Sent: Wednesday, June 26, 2002 5:53 PM Subject: [exchangelist] RE: DNS & Mail Server http://www.MSExchange.org/ - Re-Vamped! It depends to where you pointed out the mx records.. the mail would go to the corresponding server given from the mx records -----Original Message----- From: Sulis [mailto:sulis@xxxxxxxxxxxxxxxxxxxx] Sent: Wednesday, June 26, 2002 11:32 AM To: [ExchangeList] Subject: [exchangelist] DNS & Mail Server http://www.MSExchange.org/ - Re-Vamped! Hi, We are a newbie in DNS and mail server. We have 2 mail server, both installed exchange server 5.5 sp3. We want to know, there is a domain aaa.com, if in the DNS record for aaa.com : MX 10 A.com MX 20 B.com and there is first mail server (A.com) with domain bbb.com and second mail server (B.com) with aaa.com. When an e-mail sent to domain aaa.com, what will happen with this e-mail ? Thanks. Regards, Sulis. ------------------------------------------------------ You are currently subscribed to this MSExchange.org Discussion List as: robert@xxxxxxx To unsubscribe send a blank email to $subst('Email.Unsub') ------------------------------------------------------ You are currently subscribed to this MSExchange.org Discussion List as: sulis@xxxxxxxxxxxxxxxxxxxx To unsubscribe send a blank email to $subst('Email.Unsub') ------------------------------------------------------ You are currently subscribed to this MSExchange.org Discussion List as: robert@xxxxxxx To unsubscribe send a blank email to $subst('Email.Unsub')