How to reject unknown hostname connections
I've just setup Zimbra 8 (coming from 5). My 5 configuration was kind of a mess, as I ended up editing config files at times. I'm trying to configure this installation the "right way."
[zimbra@mail ~]$ zmprov gacf | grep zimbraMtaRestriction
Shouldn't one of these stop these type of connections...?
Feb 20 11:07:48 mail postfix/smtpd: connect from unknown[18.104.22.168]
Feb 20 11:07:48 mail postfix/smtpd: NOQUEUE: filter: RCPT from unknown[22.214.171.124]: <QualityCigars@sliparrive.info>: Sender address triggers FILTER smtp-amavis:[127.0.0.1]:10026; from=<QualityCigars@sliparrive.info> to=<firstname.lastname@example.org> proto=ESMTP helo=<00041382.sliparrive.info>
Or is the idea we still let the mail come through and add spamassassin points?