> On Nov 9, 2017, at 12:53 PM, Tobi <[email protected]> wrote:
>
> I have a content filter running in prequeue mode to which postfix talks
> via smtpd_proxy_filter.
Best to call that a "proxy filter" to avoid confusion.
> Runs fine, but ;-) it seems to me that postfix header checks are
> evaluated after the msg has been processed by the content filter.
Header checks happen after proxy filters and before content filters.
> Is it somehow possible to tell postfix to run those checks **before**
> msg is passed to the content filter?
Only by using a content filter. You can of course use all three: proxy
filters, header checks and content filters. They will be processed in
that order.
--
Viktor.
