我奔跑着Linux BeagleBoard-xM 3.12.5-armv7-x10 #1 SMP Fri Dec 13 03:06:20 UTC 2013 armv7l armv7l armv7l GNU/Linux，/var/log/syslog却被诸如Jan 11 10:21:09 BeagleBoard-xM sm-msp-queue[8036]: s0AJ66SY002027: to=root, ctladdr=root (0/0), delay=14:15:03, xdelay=00:00:00, mailer=relay, pri=2011764, relay=[127.0.0.1] [127.0.0.1], dsn=4.0.0, stat=Deferred: Connection refused by [127.0.0.1].
当我丢弃 sendmailapt-get remove sendmail甚至重新启动时，我感到非常惊讶。我检查了进程以确保 sendmail没有运行：
F UID PID PPID PRI NI VSZ RSS WCHAN STAT TTY TIME COMMAND
4 0 1 0 20 0 2996 1936 poll_s Ss ? 0:08 /sbin/init
1 0 2 0 …