More info about Gentoo Postfix tutorial (MX v-user database)

[danjde]

Hi friends,
I'm an ex Gentoo user, now I'm using Debian

I would like to merge this useful guide into Debian Jessie and know if I could ask here more about this Postfix Gentoo tutorial: https://wiki.gentoo.org/wiki/Complete_Virtual_Mail_Server/Postfix_additions#Introduction_to_backup-mx
Perhaps it may seem strange that I write here but it is the only guide (perhaps in the network I exist others) that has dealt with this topic, that is, the sharing between master and backup server (MX) the Postfix v-user database.

Thanks in any case for kind attention

Davide