Re: DNS Records for an Exchange Server serving multiple domains

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From: JP (NO_SPAM_PLEASE_pangjo_at_netzero.com)
Date: 07/12/04 

Date: Mon, 12 Jul 2004 12:23:26 -0400

> > MX record domain A = aaa.aaa.aaa.aaa
> > MX record domain B = bbb.bbb.bbb.bbb
> > MX record domain C = ccc.ccc.ccc.ccc
> > etc

Maybe I have not made it clear. We are going to use just ONE external
address for all the different domains. Therefore, the entries would look
like:
     MX record domain A = aaa.aaa.aaa.aaa
     MX record domain B = aaa.aaa.aaa.aaa
     MX record domain C = aaa.aaa.aaa.aaa

> That is a bit tricky but don't see why it wouldn't work as long as the ISP
> enters all those IPs as a PTR, that is too, if the customer is allocated
> those IPs to be able to do that with.

Someone mentioned to me that there can only be 1 PTR address for an IP,
while you can have many aliases pointing to one IP. If this is true, there
will be a problem when reverse-DNS lookup for other domains take place.

Joe

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