Evgeniy Berdnikov schrieb:
On Tue, Aug 09, 2016 at 04:14:49PM +0200, hw wrote:
with several domains declared as local domains, users can
send and receive messages with sender addresses the domain
part of which is any of the local domains.
There are no built-in restrictions for the sender's domain part:
by default senders can eject e-mails from arbitrary envelope
addresses and with arbitrary headers.
Then why does exim add a Sender: header?
Unfortunately,
when looking at the headers, the recipient can always see
from which domain the message was actually sent because of
headers like Received: and Sender:, and the envelope information.
May be you mean these headers exibit information about mail host.
Host may be declared local for several domains, that's true.
Yes --- fortunately it turned out that this isn´t the problem. It
leaves me with the Sender: header being added, which I need to somehow
disable.
Is there a way to make it so that the recipient of a message
sent from <[email protected]> cannot figure out that the message
was actually sent from <[email protected]> when the host exim
runs on has a primary hostname like mx.domain-a.net?
You may delete some headers in Exim routers or transports.
Look for headers_remove options in documentation (ch. 47 p. 17).
That doesn´t work for the Sender: header ...
Do I need to set up another email server for this?
Yes. You may also run several Exim instances on the same host,
however, this is slightly tricky in configuration.
Hmm, interesting idea to run several exims on the same host. Either
way, I´m trying to avoid it.
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