On 06/16/2014 01:09 PM, li...@rhsoft.net wrote:
the point is "relaying via the foreign domain's MSA service"
thats why "sender_dependent_relayhost_maps" exists in postfix
we do the same and feed "sender_dependent_relayhost_maps" as well
as "local_recipient_maps" and "smtpd_sender_login_maps" from
databases which achieves the desired result
anyways "reject_authenticated_sender_login_mismatch" is the
solution for the thread starters problem, just list there
the senders you allow for login X,Y,Z and reject anything
which is not listed
So actually the spamfilter should be much more complicated then only
matching mail from and auth login name...
(If I understand right..)
The user can use a custom "From: user@domain.example" header in the
body\data section while authenticating with another user..
So only antispam deep inspection can detect this and to apply any
filters on it.
Eliezer
