postfix反垃圾邮件设置

 　　增加防止发件人身份伪造的配置：,# smtpd related config smtpd_recipient_restrictions =   permit_mynetworks,   permit_sasl_authenticated, #  reject_non_fqdn_hostname,   reject_non_fqdn_sender,   reject_non_fqdn_recipient,   reject_unauth_destination,   reject_unauth_pipelining,   reject_invalid_hostname, ,smtpd_sender_restrictions =   permit_mynetworks,   check_recipient_access hash:/etc/postfix/local_recipient,   permit_sasl_authenticated,   reject_sender_login_mismatch,   reject_authenticated_sender_login_mismatch,   reject_unauthenticated_sender_login_mismatch,   reject_unknown_sender_domain,# SMTP AUTH config here broken_sasl_auth_clients = yes smtpd_sasl_auth_enable = yes smtpd_sasl_security_options = noanonymous,　　补充：,　　配置extmail不允许伪造不存在的本地邮件地址发邮件,不允许并仿冒他人邮件地址发送邮件,　　cd /etc/postfix/,　　cat >mysql_virtual_sender_maps.cf<,　　user = extmail,　　password = extmail,　　hosts = localhost,　　dbname = extmail,　　table = mailbox,　　select_field = username,　　where_field = username,　　additional_conditions = AND active = 1,　　EOF,　　vim main.cf,　　smtpd_sender_login_maps =,　　mysql:/etc/postfix/mysql_virtual_sender_maps.cf,　　smtpd_sender_restrictions =,　　permit_mynetworks,,　　reject_sender_login_mismatch,,　　reject_authenticated_sender_login_mismatch,,　　reject_unauthenticated_sender_login_mismatch使配置生效,　　postfix reload,