If you tell Exchange to accept mail for a certain domain name (by creating a recipient policy that would generate e-mail addresses with the domain suffix), then Exchange will accept messages for that domain. But it will also expect the recipient mailbox to exist in this Exchange organization. It basically believes that it owns the domain.
There is a way to circumvent that by editing the domain suffix in the recipient policy and unchecking the option called "This exchange organization is responsible for ALL mail delivery to this address". If you do that AND set up the Default Virtual SMTP server to "forward all mail with unresolved recipients to host:", then you will get yourself another way to reroute mail. But it is less messy to not do that but rather create an SMTP connector with address space for fgh.com and check the option "allow messages to be relayed to these domains" -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Dickenson, Steven Sent: Thursday, April 01, 2004 5:15 PM To: Exchange Discussions Subject: RE: Backup MX No, not really. What I'm saying is that provided you've set the MTA to accept mail for a particular domain, it will then route it automatically to the primary MX for that domain. You don't have to tell the MTA what to do with the mail once it accepts it. Does Exchange work this way, or do you have to create some sort of connector that re-routes the mail to the primary MX? Steven --- Steven Dickenson <[EMAIL PROTECTED]> Network Administrator The Key School, Annapolis Maryland -----Original Message----- From: Chris Scharff [mailto:[EMAIL PROTECTED] Sent: Thursday, April 01, 2004 5:08 PM To: Exchange Discussions Subject: RE: Backup MX Which is what the poster was asking about. Exchange will use secondary Mx records if a primary Mx is not available, which is what I think you were asking about. -----Original Message----- From: Fyodorov, Andrey FTL [mailto:[EMAIL PROTECTED] Posted At: Thursday, April 01, 2004 4:06 PM Posted To: swynk Conversation: Backup MX Subject: RE: Backup MX Exchange 2000 will refuse to relay mail to another domain, regardless of MX records. Unless you specifically instruct it to do so by defining an address space for that target domain and check the option "Allow relaying to this domain". To do all that, you need to start by creating an SMTP connector. -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Dickenson, Steven Sent: Thursday, April 01, 2004 4:59 PM To: Exchange Discussions Subject: RE: Backup MX Showing my ignorance of Exchange SMTP in large environments... Every unix MTA I've worked with has been intelligent enough to realize when there is a higher priority MX for the domain, and to automatically deliver mail to that machine. This, of course, assumes that the MTA is not configured as the final destination for that domain's mail, just as a relay. Does Exchange not work this way? Steven --- Steven Dickenson <[EMAIL PROTECTED]> Network Administrator The Key School, Annapolis Maryland -----Original Message----- From: Fyodorov, Andrey FTL [mailto:[EMAIL PROTECTED] Sent: Thursday, April 01, 2004 2:37 PM To: Exchange Discussions Subject: RE: Backup MX Oh... Yeah, point the secondary MX at the abc.com's Exchange 2000 server. But you will have to do other tricks to make it work so that abc.com's Exchange 2000 server would accept mail for fgh.com and then actually reroute it to fgh.com's Exchange 2000 server. But since the latter is down, then mail is going to sit in a retry queue... You want to make sure that it could hold it longer than 2-3 days, until fgh.com's Exchange 2000 server is up again and can accept mail. This is almost like ETRN. Well, you can actually set things up to be ETRN. You will need to create an additional SMTP connector on abc.com with address space for fgh.com with cost = 1, and select the option that would allow to relay mail to fgh.com. -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Phillip Stafford Sent: Thursday, April 01, 2004 2:15 PM To: Exchange Discussions Subject: RE: Backup MX Two domains, meaning that the exchange server on one domain (such as abc.com) would also utilize their Exchange 2k server to provide backup mail service to domain fgh.com in the event that fgh.com's exchange server goes down. -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Fyodorov, Andrey FTL Sent: Thursday, April 01, 2004 1:48 PM To: Exchange Discussions Subject: RE: Backup MX Why are there two domains? -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Phillip Stafford Sent: Thursday, April 01, 2004 1:37 PM To: Exchange Discussions Subject: Backup MX Anyone know the proper way for setting up 1 Exchange server to be another one's backup server? I have been searching high and low and have come upon several different supposed methods. None seem to work fully. Right now, what I have done is configured external DNS for domain B to have MX 20 (primary is MX 10) point to domain a. On Exchange server B, I have setup an SMTP connector with the domain name, the IP address for that exchange server listed in the smart host field, have configured within their to allow relaying through my server, etc. However, when we tried a test of this backup MX, I could not visibly tell whether my server was acting as a backup. I was looking at the SMTP queues and I couldn't find any messages listed for that connector even though I had been sending email to domain B and had not received any NDRs. Any help is appreciated. Thanks. _________________________________________________________________ List posting FAQ: http://www.swinc.com/resource/exch_faq.htm Web Interface: http://intm-dl.sparklist.com/cgi-bin/lyris.pl?enter=exchange&text_mode=&; lang =english To unsubscribe: mailto:[EMAIL PROTECTED] Exchange List admin: [EMAIL PROTECTED] To unsubscribe via postal mail, please contact us at: Jupitermedia Corp. Attn: Discussion List Management 475 Park Avenue South New York, NY 10016 Please include the email address which you have been contacted with. _________________________________________________________________ List posting FAQ: http://www.swinc.com/resource/exch_faq.htm Web Interface: http://intm-dl.sparklist.com/cgi-bin/lyris.pl?enter=exchange&text_mode=&; lang=english To unsubscribe: mailto:[EMAIL PROTECTED] Exchange List admin: [EMAIL PROTECTED] To unsubscribe via postal mail, please contact us at: Jupitermedia Corp. 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