I have a question regarding the "backup-mx" operation of the toaster:

I have something like

domain: test.com

MX      5       mail.master.dom
MX      10      mail.backup.dom

in my DNS records. Say mail.master.dom goes down; the sending MTA
automatically routes e-mail to mail.backup.dom.

My question is: if mail.backup.dom receives e-mail intended test.com, how
does it decide that the mail should go to mail.master.dom? ie. does the DNS
data override all /control/locals entries (_and_ /control/virtualdomains)?
or, will it be the case that even if mail.backup.dom is _not_ primary mx for
test.com (as in my little example above), will it still check
/control/rcpthosts and/or /control/virtualdomains and, if an entry is found
in there for test.com, deliver it locally?

What I am trying to investigate is the possibility of true backup mailserver
takover; ie. something better than silently queing my mail on a backup mx
when the primary is offline. But if the DNS data overrides
/control/rcpthosts and /control/virtualdomains, then my quest is
pointless... I'll never be able to make a simple configuration change on the
fly and have my backup mx become my primary mx without modifying my DNS
(which I want to avoid at all costs, as it takes so long for the changes to
take effect as to be pointless).

Many thanks for the toaster Bill & contributors, and sorry for the
"off-topicness" of this e-mail,

David Branford

Aternox Design
www.aternoxdesign.com.au
<[EMAIL PROTECTED]>


Reply via email to