[plug] Sendmail as a backup MX

[Anthony J. Breeds-Taurima]

On Wed, 13 Nov 2002 ryan at is.as.geeky.as wrote:

> Dear PLUG,
> 
> Does anyone successfully have a Sendmail primary MX of one domain running as
> backup MX for another domain?

Yes.

2 hosts:

primary.domain.one
primary.domain.two

On primary.domain.one:
Add: 
primary.domain.one
domain.one
to /etc/mail/local-hostnames
Add: 
primary.domain.two
To /etc/mail/relay-domains.

On primary.domain.two:
Add: 
primary.domain.two
domain.two
to /etc/mail/local-hostnames
Add: 
primary.domain.one.
To /etc/mail/relay-domains.

In DNS set the MX records appropriatelys, restart sendamil onm both hosts
and reload your DNS db if required.

This meand that primary.domain.one will deliver mail for {primary.}domain.one
locally and spool mail for domain.two.  primary.domain.two will do the
inverse

Done.

Yours Tony

   Jan 22-25 2003           Linux.Conf.AU            http://linux.conf.au/
		  The Australian Linux Technical Conference!