Hello, I notice quite a few hosts without rDNS/FCrDNS getting whitelisted by spamd.
I reject hosts with no rDNS using the following in my crontab: (spamdb|for i in `awk -F'|' '/GREY/{print $2}'`; do if ! host $i >/dev/null; then spamdb -dG $i; fi; done) It works, but it does not feel like it is the best way to do it. OpenSMTPD rejects the hosts without RCrDNS using a filter anyways, but it feels better to know that smtpd is not talking directly to these likely suspicious hosts. Does it make sense to add a rDNS check option to spamd? (if not a full FCrDNS check) If so then I could work on it. Thanks, Dimitrios