David wrote:
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]>
Hi,
If the backup MX has the domain in rcpthosts and virtualdomains it will
deliver it locally
If the backup MX has the domain in rcpthosts and NOT in virtualdomains
it will deliver it to the primary MX
If the backup MX does NOT have the domain in rcpthosts it will reject
the mail. (regardless if it's in virtualdomains or not)
Regards,
Rick
