[转]linux mail发送邮件stat=sent却没有收到邮件解决

linux mail发送邮件stat=sent却没有收到邮件解决

    今天尝试着想要在linux终端上直接用mail命令（e.g: mail -s "hello" [email protected]）给我163.com的邮箱发邮件时，163.com邮箱根本收不到，但是总是可以在/var/mail/root下面找到我刚才发的邮件，其实这是因为发送失败了，从而被sendmail回退了邮件回来。

    要想看失败原因, check /var/log/maillog：

    Aug 1 18:41:40 localhost sendmail[5279]: o71Afeih005279: from=root, size=220, class=0, nrcpts=1, msgid=<[email protected]domain>, relay=root@localhost

    Aug 1 18:41:42 localhost sendmail[5281]: o71Afekr005281: from=, size=480, class=0, nrcpts=1, msgid=<[email protected]domain>, proto=ESMTP, daemon=MTA, relay=localhost [127.0.0.1]

    Aug 1 18:41:42 localhost sendmail[5279]: o71Afeih005279: [email protected], ctladdr=root (0/0), delay=00:00:02, xdelay=00:00:02, mailer=relay, pri=30220, relay=[127.0.0.1] [127.0.0.1], dsn=2.0.0, stat=Sent (o71Afekr005281 Message accepted for delivery)

    Aug 1 18:41:44 localhost sendmail[5283]: o71Afekr005281: to=, ctladdr= (0/0), delay=00:00:03, xdelay=00:00:02, mailer=esmtp, pri=120480, relay=mx.139.com. [221.176.6.96], dsn=5.0.0, stat=Service unavailable

    Aug 1 18:41:44 localhost sendmail[5283]: o71Afekr005281: o71Afikr005283: DSN: Service unavailable

    Aug 1 18:41:44 localhost sendmail[5283]: o71Afikr005283: to=, delay=00:00:00, xdelay=00:00:00, mailer=local, pri=31717, dsn=2.0.0, stat=Sent

    后来在google上找了很多，最后终于找到原因了：

    I fixed the problem by changing the hostname of my server. Apparently "localhost.localdomain" will get rejected automatically by a lot of mail servers. As soon as I changed my hostname to "extra.idahostatesman.com" (a domain that is hosted on the server), everything just worked and I had no more problems sending e-mail.

这点通过查看邮件的状态信息，得到证实

550 Mail content denied

    可以用hostanme 命令临时修改主机名，hostname aa.com; 还是失败了

    Aug 1 19:11:33 localhost sendmail[5579]: o71BBVB9005579: from=root, size=221, class=0, nrcpts=1, msgid=<[email protected]>, relay=root@localhost

    Aug 1 19:11:35 localhost sendmail[5580]: o71BBX3b005580: from=, size=436, class=0, nrcpts=1, msgid=<[email protected]>, proto=ESMTP, daemon=MTA, relay=localhost [127.0.0.1]

    Aug 1 19:11:35 localhost sendmail[5579]: o71BBVB9005579: [email protected], ctladdr=root (0/0), delay=00:00:04, xdelay=00:00:02, mailer=relay, pri=30221, relay=[127.0.0.1] [127.0.0.1], dsn=2.0.0, stat=Sent (o71BBX3b005580 Message accepted for delivery)

    Aug 1 19:11:39 localhost sendmail[5582]: o71BBX3b005580: to=, delay=00:00:04, xdelay=00:00:04, mailer=esmtp, pri=120436, relay=mx.139.com. [221.176.6.96], dsn=4.0.0, stat=Deferred: 450 Requested action not taken:cmmx01, AS0QrJA75wiRVlVMWIvlAA–.3152S2, dynamic, reputation, zen.spamhaus.org, please try again

    切记：修改完hostname以后需要重启sendmail 服务，重启服务后，一切ok.