如何利用 postfix access 阻擋垃圾信 (How to ban trash mail by using postfix? )

method(1)

1. vi /etc/postfix/main.cf

#add the following script

smtpd_client_restrictions =

check_client_access hash:/etc/postfix/access

postfix reload

2. vi /etc/postfix/access

#add the following script

bandomain.com REJECT we can't allow this domain

3. postmap access

method(2)

ban selected header or body

# add the following script into the /etc/postfix/header_checks file

/From:.*ban_ip_domain/ DISCARD drop header deny

/Subject:.*ban_subject_content/ DISCARD drop header deny

syntax check: postmap -q - regexp://etc/postfix/header_checks < /etc/postfix/header_checks

postfix reload