postgreyのインストール

# apt-get install postgrey
# vi /etc/postfix/main.cf
smtpd_recipient_restrictions =
check_policy_service inet:127.0.0.1:10023
smtpd_recipient_restrictionsは、既に存在する筈なので、check～10023 の項目を追加
$ cat /etc/default/postgrey
POSTGREY_OPTS=”–inet=127.0.0.1:10023″
Aug 8 11:20:17 localhost postfix/smtpd[24958]: connect from unknown[185.105.38.248]
Aug 8 11:20:18 localhost postgrey[4516]: action=greylist, reason=new, client_name=unknown, client_address=185.105.38.248, sender=us＠ksk-es.XX, recipient=spam＠asfit.net
Aug 8 11:20:18 localhost postfix/smtpd[24958]: NOQUEUE: reject: RCPT from unknown[185.105.38.248]: 450 4.2.0 : Recipient address rejected: Greylisted, see http://postgrey.schweikert.ch/help/asfit.net.html; from= to= proto=ESMTP helo=
Aug 8 11:20:19 localhost postfix/smtpd[24958]: lost connection after DATA (0 bytes) from unknown[185.105.38.248]
Aug 8 11:20:19 localhost postfix/smtpd[24958]: disconnect from unknown[185.105.38.248]