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
以上的相关内容就是对Postfix+Cyrus-SASL+MySQL数据库投递经过验证的邮件设置的介绍，望你能有所收获。
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