On 2021-11-17 08:57, Ruben Safir wrote:
On Wed, Nov 17, 2021 at 07:56:12AM +0100, Benny Pedersen wrote:
On 2021-11-16 23:55, Ruben Safir wrote:
>I got an email from cpa...@mrbrklyn.com which is not from
>us, as we are mrbrklyn.com
local envelope sender should be rejected in port 25, no real users
do this
my mailing lists does...
run maillist software inside of mynetwork on postfix, not outside
if that is ensured you should still reject envelope senders of your
domain on port 25
sorry cant help more
