On 02/05/04 19:28 +0530, Varun Varma wrote: <snip>
-> Setup the mail.abc.net as a CNAME pointing to abc.net. That way the MX resolution for mail.abc.net would be the same as for abc.net. Never tried it and it *might* fail on some MTAs, which start looking at the DNS query reply in detail instead of accepting the returned IPs.
A CNAME? You just use an A record and a proper MX record. Though the A record is sufficent.
That is the first case I mentioned. What you are missing here is when the domain abc.net has multiple MXs - if you setup just one A record, how would the local
The advantage of using CNAMEs is contained in the message above - the MX resolution for mail.abc.net would be the same as for abc.net, so if the MXs of abc.net change or are dynamic, then you don't need to go about updating your A records. This becomes particulary important when you are using mail hosting services, where you have no control over the DNS entries and can at best ask your provider to setup the CNAME for you once.
Try a "dig MX xo.com" at regular intervals and you'll see what I mean.
Anyone know how to do this in sendmail, without using aliases?
Yes. Its called virtusertable. [EMAIL PROTECTED] [EMAIL PROTECTED]
Er..in the case of the OP, what particular advantage does this approach have over using the aliases file? Expect him having to do more work in setting up virtusertable support...
The solution I was looking for is kind of fallback relay that PostFix and Exim support. AFAIK, mailertable in sendmail won't do the job since that defines the routing for an entire domain.
-- Regards, Varun Varma --------------------------------------- Mindframe Software & Services Pvt. Ltd. http://www.mindsw.com ---------------------------------------
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