帮忙看一下这个问题.

[weixin_38060998]

# tail -f /var/adm/messages
Apr  4 04:22:18 sun2 sendmail[28441]: My unqualified host name (sun2) unknown; sleeping for retry
Apr  4 04:23:18 sun2 sendmail[28441]: unable to qualify my own domain name (sun2) -- using short name
Apr  5 03:33:00 sun2 sendmail[12252]: My unqualified host name (sun2) unknown; sleeping for retry
Apr  5 03:34:00 sun2 sendmail[12252]: unable to qualify my own domain name (sun2) -- using short name
Apr  5 04:22:25 sun2 sendmail[13904]: My unqualified host name (sun2) unknown; sleeping for retry
Apr  5 04:23:25 sun2 sendmail[13904]: unable to qualify my own domain name (sun2) -- using short name
Apr  6 03:33:00 sun2 sendmail[27632]: My unqualified host name (sun2) unknown; sleeping for retry
Apr  6 03:34:00 sun2 sendmail[27632]: unable to qualify my own domain name (sun2) -- using short name
Apr  6 04:22:20 sun2 sendmail[29278]: My unqualified host name (sun2) unknown; sleeping for retry
Apr  6 04:23:20 sun2 sendmail[29278]: unable to qualify my own domain name (sun2) -- using short name
^C
# ps -ef | grep sendmail
    root   919     1  0   Jan 16 ?        0:00 /usr/lib/sendmail -bd -q15m
    root 13056 10889  0 18:03:39 pts/1    0:00 grep sendmail
# tail -f /var/adm/messages
Apr  4 04:22:18 sun2 sendmail[28441]: My unqualified host name (sun2) unknown; sleeping for retry
Apr  4 04:23:18 sun2 sendmail[28441]: unable to qualify my own domain name (sun2) -- using short name
Apr  5 03:33:00 sun2 sendmail[12252]: My unqualified host name (sun2) unknown; sleeping for retry
Apr  5 03:34:00 sun2 sendmail[12252]: unable to qualify my own domain name (sun2) -- using short name
Apr  5 04:22:25 sun2 sendmail[13904]: My unqualified host name (sun2) unknown; sleeping for retry
Apr  5 04:23:25 sun2 sendmail[13904]: unable to qualify my own domain name (sun2) -- using short name
Apr  6 03:33:00 sun2 sendmail[27632]: My unqualified host name (sun2) unknown; sleeping for retry
Apr  6 03:34:00 sun2 sendmail[27632]: unable to qualify my own domain name (sun2) -- using short name
Apr  6 04:22:20 sun2 sendmail[29278]: My unqualified host name (sun2) unknown; sleeping for retry
Apr  6 04:23:20 sun2 sendmail[29278]: unable to qualify my own domain name (sun2) -- using short name
^C
# ps -ef | grep sendmail
    root   919     1  0   Jan 16 ?        0:00 /usr/lib/sendmail -bd -q15m
    root 13056 10889  0 18:03:39 pts/1    0:00 grep sendmail