Can MX records point to multiple cnames

[Cricket Liu]

> I want to use oxymail.oxy.com as my mx record for all my external
machines.
> I also want oxymail to be a cname for each of two firewalls.  Can I do
this:
>
> server1.oxy.com.     in     a     1.1.1.1
> server1.oxy.com .    in    mx    10  oxymail.oxy.com.
>
> firewall1.oxy.com.    in    a    1.1.1.2
> oxymail.oxy.com.    in    cname    firewall1.oxy.com
>
> firewall2.oxy.com.    in    a    1.1.1.3
> oxymail.oxy.com.    in    cname    firewall2.oxy.com.

No.

> or does the machine reverenced by the cname need to be an "A" record

Yes.

> We get too much mail to just do this and the DNS and BIND book does not
> address this clearly.

Did you not understand the paragraph on p. 97 that starts with "One
caveat..."?

cricket

Acme Byte & Wire
cricket at acmebw.com
www.acmebw.com

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