主题: 请问为何iRedmail 只能接收邮件和发送内部，不能接收从来自 QQ或163邮箱的邮件？
QQ或163邮箱退回提示：
错误码： Can not connect to Host nczyxy.edu.cn(218.204.129.194)
Jan 21 16:15:10 mail postfix/10025/smtpd[23227]: 2E5C0612718F: client=mail.nczyxy.edu.cn[127.0.0.1]
Jan 21 16:15:10 mail postfix/cleanup[23216]: 2E5C0612718F: message-id=<b6867c5242ab871c6877f393cb49e409@nczyxy.com>
Jan 21 16:15:10 mail postfix/10025/smtpd[23227]: disconnect from mail.nczyxy.edu.cn[127.0.0.1]
Jan 21 16:15:10 mail postfix/qmgr[21400]: 2E5C0612718F: from=<hr@nczyxy.com>, size=889, nrcpt=1 (queue active)
Jan 21 16:15:10 mail amavis[2409]: (02409-02) Passed CLEAN {RelayedInternal}, ORIGINATING/MYNETS LOCAL [127.0.0.1]:37122 <hr@nczyxy.com> -> <flyboy0791@163.com>, Queue-ID: 5E0E8612718E, Message-ID: <b6867c5242ab871c6877f393cb49e409@nczyxy.com>, mail_id: DWT0rFzn58Fw, Hits: 0.213, size: 415, queued_as: 2E5C0612718F, 1703 ms, Tests: [ALL_TRUSTED=-1,TVD_RCVD_SINGLE=1.213]
Jan 21 16:15:10 mail postfix/amavis/smtp[23221]: 5E0E8612718E: to=<flyboy0791@163.com>, relay=127.0.0.1[127.0.0.1]:10026, delay=1.8, delays=0.12/0.01/0/1.7, dsn=2.0.0, status=sent (250 2.0.0 from MTA(smtp:[127.0.0.1]:10025): 250 2.0.0 Ok: queued as 2E5C0612718F)
Jan 21 16:15:10 mail postfix/qmgr[21400]: 5E0E8612718E: removed
Jan 21 16:15:11 mail postfix/smtp[23228]: Untrusted TLS connection established to 163mx01.mxmail.netease.com[220.181.14.141]:25: TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)
Jan 21 16:15:12 mail postfix/smtp[23228]: 2E5C0612718F: to=<flyboy0791@163.com>, relay=163mx01.mxmail.netease.com[220.181.14.141]:25, delay=2.1, delays=0/0.02/1.6/0.53, dsn=2.0.0, status=sent (250 Mail OK queued as mx14,QMCowEBJxlcOTGRaVqAMEQ--.6358S3 1516522512)
Jan 21 16:15:12 mail postfix/qmgr[21400]: 2E5C0612718F: removed