Re: [cobalt-users] Stupid secondary MX question?

[Gerald Waugh <gwaugh@xxxxxxxxxxxxxxxxxxxxxxx>]

On Sun, 1 Jun 2003, Rick Highness wrote:
> I've been searching through the archives, and can't quite seem to find
> an answer to my question.
>
> I have two RaQ550 boxen (Thanks, Gerald, you ROCK!).  I have one
> configured as my production server and the other as my development (aka
> hot backup).  If I want to have the development box accept mail for one
> (or several domains) in the unlikely event that my production box goes
> down, how do I do it?
>
> This is what I have done:
>
> On the production box: I have a MX record set with delivery priority set
> high which points to the production box.  I have a second MX record set
> with delivery priority set low which points to the development box.
>
> On the development box: I have relaying allowed for the production box.
>
> When I shut down sendmail on the production box and send an email to
> someone on the production box, the development box gets the message
> (like it is supposed to) but replies with: "Relaying denied.  Please
> check your mail first or restart your mail session."
>
> What am I missing?

Put the actual domain name(s) for relaying on the development box,
IP addresses or just server name do not work.

The other thing is do a lookup on the MX records and make sure they are
responding correctly.

dig @production.box MX (providing the production box is the nameserver)

Gerald
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