Multiple MX records on the one Domain

[DarraghFitzpatrick]

I currently have two proxy servers both running off seperate broadband connections. ProxyA and ProxyB

Proxy A is used as a mail and HTTP gateway

Proxy B is currently used as a citrix gateway

I wish to use PRoxy B as a backup email gateway also.
All other considerations aside, this will involve adding a second MX record on my domain at a lower priority.

I only wish the lower prioritized MX record to be used when the broadband connection to ProxyA goes down and renders the higher priortized MX record invalid

I wish to confirm that the email would only be re-routed to the lower MX record in the above scenario.
To explain this furthger, I would also like to know what is the deciding factor in declaring the server unreachable, I presume it is a timeout, but what is the length of this timeout ? etc

Regards

Darragh

 

[Morsing]

Your setup would work. The timeout is probably one minute but I don't know.

Cheers

Henrik Morsing
Certified AIX 4.3 Systems Administration
& p690 Technical Support