以下的文章主要讲述的是Postfix+Cyrus-SASL+MySQL数据库投递经过验证的邮件正确设置的实际操作步骤，就算它是要投到本地域的邮件或来自本地局域网的邮件都要通过验证，否则就不让过。main.cf 这一段要如何修改呢？
mynetworks_style = host
mynetworks = 168.100.189.0/28, 127.0.0.0/8 定义你的服务器IP #====================SASL===================== smtpd_sasl_auth_enable = yes smtpd_sasl_security_clients = noanonymous broken_sasl_auth_clients = yes smtpd_delay_reject = yes smtpd_recipient_restrictions = permit_sasl_authenticated reject_rbl_client opm.blitzed.org reject_rbl_client list.dsbl.org reject_rbl_client bl.spamcop.net reject_rbl_client sbl-xbl.spamhaus.org reject_rbl_client cbl.anti-spam.org.cn reject_rbl_client cdl.anti-spam.org.cn reject_rbl_client cblplus.anti-spam.org.cn reject_invalid_hostname reject_unknown_sender_domain reject_non_fqdn_sender reject_non_fqdn_recipient reject_unknown_recipient_domain reject_unauth_pipelining reject_unauth_destination permit_mynetworks check_recipient_maps smtpd_client_restrictions = permit_sasl_authenticated smtpd_helo_restrictions = reject_invalid_hostname smtpd_sender_restrictions = permit_sasl_authenticated reject_non_fqdn_sender reject_unknown_sender_domain reject_sender_login_mismatch smtpd_sasl_authenticated_header = yes smtpd_helo_required = yes
上面说了这么多内容，是关于对Postfix+Cyrus-SASL+MySQL数据库投递经过验证的邮件设置的介绍，不知道各位对MySQL的认识是不是更上一层楼了，时时关注ITJS，学习最新Mysql技术。