On 2022-05-24 at 08:16:12 UTC-0400 (Tue, 24 May 2022 08:16:12 -0400)
Viktor Dukhovni <postfix-users@postfix.org>
is rumored to have said:
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".
Indeed, and deployment of that tactic at fantomas.sk has already
resulted in messages to the ASF SpamAssassin Users mailing list being
duplicated.
--
Bill Cole
b...@scconsult.com or billc...@apache.org
(AKA @grumpybozo and many *@billmail.scconsult.com addresses)
Not Currently Available For Hire
