On Wed, Aug 09, 2023 at 07:34:48AM +0200, Fourhundred Thecat via Postfix-users
wrote:
> So that the first hop looks like this:
>
> Received: from [127.0.0.1] (localhost [127.0.0.1])
> by mail.xxx.yyy (Postfix) with ESMTPSA id 7E011B0
> for <a...@bbb.com>; Wed, 9 Aug 2023 07:04:42 +0200 (CEST)
Try a small change:
Received: from localhost.local (localhost.local [127.0.0.1])
by mail.xxx.yyy (Postfix) with ESMTPSA id 7E011B0
for <a...@bbb.com>; Wed, 9 Aug 2023 07:04:42 +0200 (CEST)
That is, use a hostname as the recorded "HELO" name, rather than
address-literal, and make that name be an FQDN while you're at it.
This might be enough.
--
Viktor.
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