On Mon, Apr 22, 2019, 10:43 AM Thuban, <thu...@yeuxdelibad.net> wrote:

> * Otto Moerbeek <o...@drijf.net> le [21-04-2019 12:49:07 +0200]:
> > On Sun, Apr 21, 2019 at 09:53:52AM +0000, Mik J wrote:
> >
> > > Hello,
> > > I read the man but it's not so clear to me
> > > https://man.openbsd.org/spamd#SYNCHRONISATION
> > > a) I chose unicast synchronisation but I don't know which port should
> I open on the firewall ?
> > > Is it going to use the spamd-cfg service ?
> >
> > It will use spamd-sync (udp port 8025)
>
> Good to know, I was blocking this traffic. It might be interesting to
> add a word about this in the manpage, what do you think?
>

tcpdump -nettti pflog0

That command tells you if anything is being blocked. I normally start
there. You would have seen port 8025 being blocked right away

>
>

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