Hello,
i would like to create the following setup for two postfix servers.
The setup:
Server A is the smtp(s) server and the MX record for some domains.
He accepts mail from clients over sasl/tls for delivery to the internet
or to the domains.
He does forward all external mail to Server B
He works as a mail-gateway
Server B has no MX record, but takes all mails from Server A, stores
them locally (for access via IMAP) or delivers them to hosts from the
domains.
All outbound mail will NOT be delivered directly, but transported to the
mail-gateway Server A, which in turn delivers to the internet. This may,
the MX server will the the source of such mail ...
So, all external input or output will be done by Server A.
Internal delivery will be done by Server B, while all other domains will
be forwared to Server A again ...
This sound like a possible loop :-/
I have some ideas about mydestinaton, relay_domains, mynetworks and a
transport map, but i feel that there may be a easy and RECOMMENED way to
create such a setup ...
Can anybody give me a hint about the best direction to go?
Thank you!