ZhangHuangbin wrote:
It should be OK.
This is caused by DNS resolve, because Postfix is chrooted under /var/spool/postfix/, it can't reverse IP address to hostname. Leave postfix 'smtpd' unchrooted in master.cf will fix it.
It should be ok, but because of this, with every email received Spamassassin triggers the RDNS_NONE rule with a score 1.274. That can make a difference for emails from being labelled as spam or not.