Your question isn't really specific, but my best guess is that -Tfilters will do the trick.
martijn@ On Thu, 2021-01-07 at 12:45 +0100, Harald Dunkel wrote: > Hi folks, > > for debugging I would like to know which "match" line does > actually match the incoming EMails. Is there some option for > opensmtpd to watch it? "-v" seems to be insufficient. > > Every insightful comment would be highly appreciated. > > > Regards > Harri >