Postfix，Dovecot – 从外部连接，authentication

我想在我的服务器上运行postfix + dovecot。 我是第一次这样做。 Postfix和Dovecot在本地工作 – 我可以通过telnet连接，并使用命令发送/接收电子邮件。 当我尝试从外部连接时，使用邮件客户端（在我的情况下，Thunderbird），我总是看到客户端警报： Authentication failed 。

我的/ var / log / maillog文件说：

dovecot: pop3-login: Disconnected: Shutting down (auth failed, 6 attempts): user=<test.user>, method=PLAIN, rip=xxx.xxx.xxx, lip=xxx.xxx.xxx 。

发行是CentOS 6

• 服务器上每个用户的多个SSH密钥
• Windows上的Postgres SSPIauthentication
• 强制Windows提示authentication共享文件夹/禁用“记住我的凭据”
• 在保持SSH密钥validation的同时，启用SFTP的密码login
• Windows 7单一login

编辑（ postconf -n ）：

 alias_database = hash:/etc/aliases alias_maps = hash:/etc/aliases command_directory = /usr/sbin config_directory = /etc/postfix daemon_directory = /usr/libexec/postfix data_directory = /var/lib/postfix debug_peer_level = 2 home_mailbox = Maildir/ html_directory = no inet_interfaces = all inet_protocols = all mail_owner = postfix mailq_path = /usr/bin/mailq.postfix manpage_directory = /usr/share/man mydestination = $myhostname, localhost.$mydomain, localhost, $mydomain mydomain = mydomain.com myhostname = host.mydomain.com mynetworks = xxx.xxx.xxx/24 127.0.0.0/8 mynetworks_style = subnet myorigin = $mydomain newaliases_path = /usr/bin/newaliases.postfix queue_directory = /var/spool/postfix readme_directory = /usr/share/doc/postfix-2.6.6/README_FILES sample_directory = /usr/share/doc/postfix-2.6.6/samples sendmail_path = /usr/sbin/sendmail.postfix setgid_group = postdrop unknown_local_recipient_reject_code = 550 

当我想从Thunderbird向外部主机发送电子邮件时，我得到5.7.1 <[email protected]>: Relay access denied 。

错误日志： NOQUEUE: reject: RCPT from my_vps_domain[xxx.xxx.xxx.xxx]: 554 5.7.1 <[email protected]>: Relay access denied; from=<[email protected]> to=<[email protected]> proto=ESMTP helo=<[127.0.0.1]> NOQUEUE: reject: RCPT from my_vps_domain[xxx.xxx.xxx.xxx]: 554 5.7.1 <[email protected]>: Relay access denied; from=<[email protected]> to=<[email protected]> proto=ESMTP helo=<[127.0.0.1]>