On Tue, Sep 07, 2021 at 03:32:02PM +0100, Jeremy Harris via Exim-users wrote:
> 44a62f5861 looks relevant:
>
> JH/59 DKIM: Fix small-message verification under TLS with chunking. If a
> pipelined SMTP command followed the BDAT LAST then it would be
> incorrectly treated as part of the message body, causing a verification
> fail.
PIPELINING is not advertised. I also studied smtp session in traffic
dump: sender wait for replies and do not send commands ahead.
> ... except for:> Removal of TLS layer does not help to prevent DKIM failures.
>
> Worth checking you have it, though.
There are "P=esmtp" in log records and "with esmtp" in headers.
I read traffic dumps for plain smtp connections.
--
Eugene Berdnikov
