On 05.10.23 01:37, Viktor Dukhovni via Exim-users wrote:
> On Wed, Oct 04, 2023 at 09:36:12PM +0200, Mario Emmenlauer wrote:
>
>>> Rather than leak user@<somehost>.domain forms out to the public
>>> Internet, explain and solve the real problem that not masquerading
>>> all users behind the primary domain is supposed to solve???
>>
>> So for me, the exim email system on the desktop computers is exclusively used
>> by the Linux operating system. I do not enable incoming email, so all mails are
>> generated by the various services that come with Linux. Some of these services
>> are operated intentionally by me, like logcheck and monit. But some are just
>> basic system services that tend to report relevant information via email, often
>> to root.
>
> As I suspected, you're sensibly trying to be able to tell at a glance
> which machine a message is from. This use-case is the main purpose of
> the address rewritng proposed in the Postfix null-client guide in the
> MULTI_INSTANCE doc.
>
> I am sure confident very similar can be done in Exim. Just rewrite
> on each host (From headers):
>
> # Replace "admin" with any suitable name of your choice.
> # Replace "hostname" with the actual name of each machine.
> root -> admin+root=hostname@???
> bin -> admin+bin=hostname@???
> ...
>
> Any bounces will end up in "admin"'s mailbox on the smarthost.
> You'll be able to tell where the message came from by looking
> at the From address.
This sounds very interesting, I'll give it a try! Thanks for the very nice
suggestion!
All the best,
Mario
--
## subscription configuration (requires account):
##
https://lists.exim.org/mailman3/postorius/lists/exim-users.lists.exim.org/
## unsubscribe (doesn't require an account):
## exim-users-unsubscribe@???
## Exim details at
http://www.exim.org/
## Please use the Wiki with this list -
http://wiki.exim.org/
