On Thu, Jan 12, 2023 at 09:53:08PM +0100, Jaroslaw Rafa wrote:
> > Roundcube webmail has a neat solution - obviously they can't alter the
> > header, but they do add their own "received" header with the option of
> > "encrypting" it with a fixed key. I'm wondering if that's a "milterable"
> > thing - extract the first received header, crypt it, then put it back in
> > the same place in the headers...
>
> It definitely should be, that's a typical thing milters do.
Milters don't get to inspect the Received header added by the MTA
invoking the milter. They see the message as it came in, before
the local trace header is added.
--
Viktor.
