On Thu, Jul 21, 2022 at 08:26:37PM +0200, Jonathan Sélea wrote:
> Hopefully this question is relevant for this mailing-list..
> Does anyknow know of a TLS-RPT milter for postfix that can generate and
> send reports, kinda like what you can do with OpenDMARC?
This is not possible as matter of principle, because TLS-RPT messages
are about TLS issues in *outbound* mail, while milters handle *inbound*
mail. TLS-RPT would requires processing log information, at a
granularity that is not currently available.
My own preference would be to implement in-band signalling (an ESMTP
extension) that would inform the remote SMTP server of {(most) TLS
issues as part of the SMTP connection setup.
It would then be up to the remote SMTP server to log such reports as it
sees fit.
--
Viktor.
