我有两个使用sendmail进行邮件传递的相同configuration的OpenBSD机器。 除了设置别名root: [email protected] ，我基本上没有改变sendmail的安装。 他们都在同一个子网上，都可以访问邮件服务器mail.example.com 。 但是，其中一个不能发送邮件。 我不太熟悉sendmail，所以希望有人能解释这种行为。 我已经从下面的每台机器上发布了/var/log/maillog/
成功交付的机器：
Dec 7 11:57:35 gw003 sendmail[9640]: nB7JvZmS009640: from=kamil, size=60, class=0, nrcpts=1, msgid=<200912071957.nB7JvZmS009640@gw00 3.backbone.example.com>, relay=root@localhost Dec 7 11:57:35 gw003 sm-mta[30258]: nB7JvZlR030258: from=<[email protected]>, size=401, class=0, nrcpts=1, msgid=<2 [email protected]>, proto=ESMTP, daemon=MTA, [email protected] [127. 0.0.1] Dec 7 11:57:35 gw003 sendmail[9640]: nB7JvZmS009640: [email protected], ctladdr=kamil (1031/1031), delay=00:00:00, xdelay=00: 00:00, mailer=relay, pri=30060, relay=[127.0.0.1] [127.0.0.1], dsn=2.0.0, stat=Sent (nB7JvZlR030258 Message accepted for delivery) Dec 7 11:57:35 gw003 sm-mta[29848]: STARTTLS=client, relay=mail.example.com., version=TLSv1/SSLv3, verify=FAIL, cipher=AES256-SHA, bits=256/256 Dec 7 11:57:35 gw003 sm-mta[29848]: nB7JvZlR030258: to=<[email protected]>, ctladdr=<[email protected]> (1031/1 031), delay=00:00:00, xdelay=00:00:00, mailer=esmtp, pri=30401, relay=mail.example.com. [10.2.32.11], dsn=2.0.0, stat=Sent (4b1d5e2 f-0000528c Message accepted for delivery)
无法提供的机器：
Dec 7 12:00:35 gw004 sendmail[12957]: nB7K0ZdA012957: from=kamil, size=60, class=0, nrcpts=1, msgid=<200912072000.nB7K0ZdA012957@gw0 04.backbone.example.com>, relay=root@localhost Dec 7 12:00:35 gw004 sm-mta[25655]: nB7K0Z7U025655: <[email protected]>... User unknown Dec 7 12:00:35 gw004 sendmail[12957]: nB7K0ZdA012957: [email protected], ctladdr=kamil (1031/1031), delay=00:00:00, xdelay=00 :00:00, mailer=relay, pri=30060, relay=[127.0.0.1] [127.0.0.1], dsn=5.1.1, stat=User unknown Dec 7 12:00:35 gw004 sm-mta[25655]: nB7K0Z7U025655: from=<[email protected]>, size=60, class=0, nrcpts=0, proto=ESM TP, daemon=MTA, [email protected] [127.0.0.1] Dec 7 12:00:35 gw004 sendmail[12957]: nB7K0ZdA012957: nB7K0ZdB012957: DSN: User unknown Dec 7 12:00:36 gw004 sm-mta[25655]: nB7K0Z7W025655: from=<>, size=2203, class=0, nrcpts=1, msgid=<200912072000.nB7K0ZdB012957@gw004. backbone.example.com>, proto=ESMTP, daemon=MTA, [email protected] [127.0.0.1] Dec 7 12:00:36 gw004 sendmail[12957]: nB7K0ZdB012957: to=kamil, delay=00:00:01, xdelay=00:00:01, mailer=relay, pri=31084, relay=[127 .0.0.1] [127.0.0.1], dsn=2.0.0, stat=Sent (nB7K0Z7W025655 Message accepted for delivery) Dec 7 12:00:36 gw004 sm-mta[9947]: nB7K0Z7W025655: to=<[email protected]>, delay=00:00:01, xdelay=00:00:00, mailer= local, pri=32465, dsn=2.0.0, stat=Sent
我怀疑“坏”系统的名称parsing问题。 检查/ etc / hosts中的非对称条目。 检查两台机器上的DNSparsing。
ifconfig -a # note various IP adresses of this system dig -x 192.1.2.3 # query FQDN for my own ip, are results symmetric? dig -x 1.2.3.4 # same on another interface dig -x 5.6.7.8 # and another one
和
dig my.fully.qualified.domain.name. dig another.fully.qualified.domain.name.
和
hostname # is it symmetric on both systems? or short on one and fully-qualified on another?
[email protected] [127.0.0.1]
您不通过您的邮件服务器mail.example.com中继
这当然是与中继域或服务器域有关的configuration问题。 （在第二台机器上，它在本地主机上发送邮件，这意味着它认为最终的目的地本身。检查域/主机名/中继）
检查/etc/mail/local-host-names和/etc/mail/relay-domains ，也许/etc/mail/mailertable – 你的第二个盒子需要知道它是example.com还是如何获得那里。