Why am I seeing a ton of these messages in my mail.log files?
Jul 3 20:16:02 astra dovecot[2254]: auth(default): shadow(
[email protected],1.2.3.4): unknown user
Jul 3 20:16:02 astra dovecot[2254]: auth(default): passwd(
[email protected],1.2.3.4): unknown user
I noticed other log...