MX fallback solution

[mangelot]

ephigenie Wrote:shouldn't be that difficult ...
it's more a thing of replicating the postfix maps to another server so that the virtual domains & users are known to them, too.
then a second MX - entry and a few changes in the main.cf of the second(fallback) MX that should be enough, i think.

The replication can be established like some people do with bind atm. (download via cronjob & http) .

I think you are suggesting to download the accounts from the secondary server?
But I was thinking of an solution on the same single ispCP server.
example:

mx10 my home ipadres
mx20 my ispcp server

when my home ip is down, the secondary mx20 will fallback the emails for the period of time mx10 is offline,
there are further no email accounts in ispCP, only the possibility of to relay/backup mail for a domain during fallback.

are I'm I talking stupid right now
I'm not so into fallback systems..
sorry for my english...