> On Jun 2, 2016, at 11:25 AM, Alex <[email protected]> wrote:
>
> I need some help working out why my postfix 2.10.1 is removing the sender
> address when I send mail from a $mynetworks host using a non-$mydestination
> sender address.
Postfix does not do that.
> postfix/trivial-rewrite[30908]: match_list_match: PROBLEMSENDERDOMAIN.com: no
> match
That logging is irrelevant. Don't needlessly enable verbose logging.
> When postfix tries to send the email to the upstream smarthost, it's rejected
> as it has a null sender (I've confirmed this with a network trace). I am
> wondering what I should check next to nail the problem.
You're probably observing the transmission of a bounce, not the original
message.
Your upstream gateway should not reject relaying of bounces. If that
can't be fixed, find a better gateway.
--
Viktor.
