one domain, one gatway, more then one mail server ....

[dbzmh]

first to say HI to all, this is my first encounter with Proxmox MG and this forum so if i post in wrong place ... sooorrrryyy ...

we have one domain, let say example.com, and MX is setup and router is forwarding tcp port 25 to virtual macine running mail gateway ...
so one day new mail arrive ...

what i need that mailgateway check is it valid domain ... email for joe@example.com has arrive ... then it say ok i relay the @example.com so
then it have list of servers, not one server for MTA relay for that domain and go one by one server and ask... DO YOU HAVE joe@example.com ... if it say YES
it is delivered to that server ... if not it goes to next and the next ... will be nice to bounce back email that have no valid destination ...

let say i have 4 servers in organization .. different branch use different software solution ...and they all need to play nice ... yes .. i know split domain ... but this
is not it .. and i do not want to have list of users per server to organize transport ( yessss .. i know a bit about email servers ) ... i need it to be done by gateway ...

i have dynamic user add and remove.. and it will be hell of updating a list

 

[dcsapak]

possibly via virtual domains in postfix http://www.postfix.org/VIRTUAL_README.html
(you can overwrite the main.cf via templates see our documentation)
but no pmg built in functionality

 

[dbzmh]