> On Sep 27, 2018, at 4:29 AM, Calvin Browne <[email protected]> wrote:
>
> I understand that this needs to be done after the DATA phase - so using a
> before queue filter?
>
> The docs seem to indicate that I wont have access to the To: stuff at that
> stage - is that true?
The Postfix access(5) machinery does not have access to the envelope
recipient list (when more than one recipient) in smtpd_data_restrictions
and smtpd_end_of_data_restrictions. This in no way applies to before queue
proxy filter, since these of course receive the complete envelope and message
content. What you cannot do is reject a non-empty proper subset of the
recipients, they must all get accepted or none, by accepting or reject the
entire message after "DOT". You can silently drop some recipients, but that's
generally unwise.
--
Viktor.
