Email 以非root用户身份发送邮件

我正在尝试使用非root用户（也是通过tuleap应用程序）发送邮件，但遇到了一些问题

当我们将根用户与命令一起使用时

  echo “TR : This is a test of sending mail” | mail -s Test <mail>

echo“TR：这是发送邮件的测试”| mail-s测试

它将返回此日志并发送我的电子邮件

Mar 10 16:59:09 localhost sendmail[11969]: t2AGx9Up011969: from=root,   size=258, class=0, nrcpts=1, msgid=<201503101659.t2AGx9Up011969@localhost.localdomain>, relay=root@localhost
Mar 10 16:59:09 localhost sendmail[11970]: t2AGx9Js011970: from=<root@localhost.localdomain>, size=521, class=0, nrcpts=1, msgid=<201503101659.t2AGx9Up011969@localhost.localdomain>, proto=ESMTP, daemon=MTA, relay=localhost [127.0.0.1]
Mar 10 16:59:09 localhost sendmail[11969]: t2AGx9Up011969: to=<my mail>, ctladdr=root (0/0), delay=00:00:00, xdelay=00:00:00, mailer=relay, pri=30258, relay=[127.0.0.1] [127.0.0.1], dsn=2.0.0, stat=Sent (t2AGx9Js011970 Message accepted for delivery)
Mar 10 16:59:12 localhost sendmail[11972]: STARTTLS=client, relay=<my SMTP server>, version=TLSv1/SSLv3, verify=OK, cipher=DHE-RSA-AES256-GCM-SHA384, bits=256/256
Mar 10 16:59:15 localhost sendmail[11972]: t2AGx9Js011970: to=<my mail>, ctladdr=<root@localhost.localdomain> (0/0), delay=00:00:06, xdelay=00:00:06, mailer=relay, pri=120521, relay=<my SMTP server> [IP], dsn=2.0.0, stat=Sent (OK id=1YVNUv-002ihW-JJ)

Mar 10 16:59:09 localhost sendmail[11969]：t2AGx9Up011969:from=root，size=258，class=0，nrcpts=1，msgid=，中继=root@localhost
三月十日16:59:09 localhost sendmail[11970]：t2AGx9Js011970:from=，size=521，class=0，nrcpts=1，msgid=，proto=ESMTP，daemon=MTA，relay=localhost[127.0.0.1]
3月10日16:59:09 localhost sendmail[11969]：t2AGx9Up011969:to=，ctladdr=root（0/0），delay=00:00:00，xdelay=00:00:00，mailer=relay，pri=30258，relay=[127.0.0.1][127.0.0.1]，dsn=2.0.0，stat=Sent（t2AGx9Js011970消息接受传递）
3月10日16:59:12 localhost sendmail[11972]：STARTTLS=client，relay=，version=TLSv1/SSLv3，verify=OK，cipher=DHE-RSA-AES256-GCM-SHA384，bit=256/256
三月十日16:59:15本地主机发送邮件[11972]：t2AGx9Js011970:to=，ctladdr=（0/0），延迟=00:00:06，xdelay=00:00:06，mailer=relay，pri=120521，relay=[IP]，dsn=2.0.0，stat=Sent（OK id=1YVNUv-002ihW-JJ）

但是，当我们使用同一命令使用其他用途（如tuleap使用的codendiadm）时，它会返回此日志而不发送邮件

Mar 10 16:59:53 localhost sendmail[12024]: t2AGxrhg012024: from=codendiadm, size=258, class=0, nrcpts=1, msgid=<201503101659.t2AGxrhg012024@localhost.localdomain>, relay=codendiadm@localhost
Mar 10 16:59:53 localhost sendmail[12025]: t2AGxr16012025: from=<codendiadm@localhost.localdomain>, size=556, class=0, nrcpts=1, msgid=<201503101659.t2AGxrhg012024@localhost.localdomain>, proto=ESMTP, daemon=MTA, relay=localhost [127.0.0.1]
Mar 10 16:59:53 localhost sendmail[12024]: t2AGxrhg012024: to=<my mail>, ctladdr=codendiadm (495/492), delay=00:00:00, xdelay=00:00:00, mailer=relay, pri=30258, relay=[127.0.0.1] [127.0.0.1], dsn=2.0.0, stat=Sent (t2AGxr16012025 Message accepted for delivery)
Mar 10 16:59:57 localhost sendmail[12027]: STARTTLS=client, relay=<my SMTP server>, version=TLSv1/SSLv3, verify=OK, cipher=DHE-RSA-AES256-GCM-SHA384, bits=256/256
Mar 10 17:00:00 localhost sendmail[12027]: t2AGxr16012025: to=<my mail>, ctladdr=<codendiadm@localhost.localdomain> (495/492), delay=00:00:07, xdelay=00:00:07, mailer=relay, pri=120556, relay=<my SMTP server> [IP], dsn=5.1.1, stat=User unknown
Mar 10 17:00:00 localhost sendmail[12027]: t2AGxr16012025: t2AH0016012027: DSN: User unknown

Mar 10 16:59:53本地主机发送邮件[12024]：t2AGxrhg012024:from=codendiadm，size=258，class=0，nrcpts=1，msgid=，中继=codendiadm@localhost
三月十日16:59:53 localhost sendmail[12025]：t2agxr1602025:from=，size=556，class=0，nrcpts=1，msgid=，proto=ESMTP，daemon=MTA，relay=localhost[127.0.0.1]
3月10日16:59:53本地主机发送邮件[12024]：t2AGxrhg012024:to=，ctladdr=codendiadm（495/492），延迟=00:00:00，xdelay=00:00:00，mailer=relay，pri=30258，relay=[127.0.0.0.1][127.0.0.1]，dsn=2.0.0，stat Sent（t2AGxr16012025邮件接受发送）
3月10日16:59:57 localhost sendmail[12027]：STARTTLS=client，relay=，version=TLSv1/SSLv3，verify=OK，cipher=DHE-RSA-AES256-GCM-SHA384，bit=256/256
3月10日17:00:00本地主机发送邮件[12027]：T2AGXR1602025:to=，ctladdr=（495/492），延迟=00:00:07，xdelay=00:00:07，mailer=relay，pri=120556，relay=[IP]，dsn=5.1.1，stat=User unknown
3月10日17:00:00本地主机发送邮件[12027]：T2AGXR1602025:t2AH0016012027:DSN:用户未知

尝试删除sendmail并安装postfix。告诉我这样是否效果更好。你会发现怎么做的