Robert Chalmers: > Thanks, but I have no idea what you mean. Sorry. auth=0/1 means that the client tried to login once with SASL and succeeded zero times. That's how you detect if a client is trying out passwords.
Wietse > > ----- > Robert Chalmers > https://robert-chalmers.uk > https://robert-chalmers.com > @R_A_Chalmers > > > > On 6 Jul 2020, at 4:07 pm, Wietse Venema <wie...@porcupine.org> wrote: > > > > ?Robert Chalmers (Author): > >> > >> > >> Such as this one? > >> > >> Jul 06 08:10:03 www postfix/smtpd[6155]: disconnect from > >> unknown[45.125.65.52] ehlo=1 auth=0/1 quit=1 commands=? > > > > Like Benny writes, you need to trigger on the auth=x/y part, not > > the client hostname. > > > > Wietse > > > >> So I have anyway written this to find them > >> sudo grep unknown /var/log/postfix.log | grep -E -o > >> "([0-9]{1,3}[\.]){3}[0-9]{1,3}" | sort -n | uniq > output.txt > >> > >> Take out my own network and localhost etc, and put them into pfct?s badguys > >> > >> works nicely. > >> > >> thanks > >> robert > >> > >> > >> > >>>> On 6 Jul 2020, at 14:28, Wietse Venema <wie...@porcupine.org> wrote: > >>> > >>> auth= > >> > >>