最近公司的郵件伺服器受到廣告信件轉寄的困擾(使用 CentOS 6.2 + sendmail)
在 log中留下很多如下列信息
Aug 5 05:03:54 www sendmail[5686]: s74KunaN005686: from=<[email protected]>, size=418, class=0, nrcpts=5, msgid=<[email protected]>, proto=ESMTP, daemon=MTA, relay=[190.41.128.118]
Aug 5 05:03:54 www sendmail[5686]: s74KunaN005686: to=<[email protected]>, delay=00:00:06, mailer=esmtp, pri=150418, stat=queued
Aug 5 05:03:54 www sendmail[5686]: s74KunaN005686: to=<[email protected]>, delay=00:00:06, mailer=esmtp, pri=150418, stat=queued
Aug 5 05:03:54 www sendmail[5686]: s74KunaN005686: to=<[email protected]>, delay=00:00:06, mailer=esmtp, pri=150418, stat=queued
Aug 5 05:03:54 www sendmail[5686]: s74KunaN005686: to=<[email protected]>, delay=00:00:06, mailer=esmtp, pri=150418, stat=queued
Aug 5 05:03:54 www sendmail[5686]: s74KunaN005686: to=<[email protected]>, delay=00:00:06, mailer=esmtp, pri=150418, stat=queued
公司的 mail server 有設定只有內部的IP才會轉寄.. 但為何能從外部 [ip 190.41.128.118 非公司內部] 透過公司的郵件伺服器將信件送出??
請問有人知道應作如何的設定.. 在 郵件伺服器上 或 其他方法來防止嗎?
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