> On 24 May 2022, at 8:09 am, Matus UHLAR - fantomas <uh...@fantomas.sk> wrote:
>
> I have customer where incoming messages have the
> "message was received from external source"
> banned added.
>
> The resulting messages don't have valid DKIM-signature: (or none at all), and
> the only way to forward without problems is either to encapsulate them into
> attachment or to rewrite From: to contain local domain and add
> DKIM-signature: matching the domain.
Encapsulation is by far the better option. Replies to encapsulated
messages will work much better than would replies to message with
SRS-mangled "From". The real solution is for the customer to exempt
your relay from the needlessly erected barriers to delivery.
--
Viktor.
