[原创] 大家帮忙分析下这问题怎么解决啊

Nov 1 00:21:11 db2 sendmail[28229]: [ID 702911 mail.crit] My unqualified host name (db2) unknown; sleeping for retry
Nov 1 00:22:12 db2 sendmail[28229]: [ID 702911 mail.alert] unable to qualify my own domain name (db2) -- using short name
Nov 2 00:21:12 db2 sendmail[28466]: [ID 702911 mail.crit] My unqualified host name (db2) unknown; sleeping for retry
Nov 2 00:22:12 db2 sendmail[28466]: [ID 702911 mail.alert] unable to qualify my own domain name (db2) -- using short name
Nov 3 00:21:13 db2 sendmail[28698]: [ID 702911 mail.crit] My unqualified host name (db2) unknown; sleeping for retry
Nov 3 00:22:13 db2 sendmail[28698]: [ID 702911 mail.alert] unable to qualify my own domain name (db2) -- using short name
Nov 4 00:21:15 db2 sendmail[28936]: [ID 702911 mail.crit] My unqualified host name (db2) unknown; sleeping for retry
Nov 4 00:22:15 db2 sendmail[28936]: [ID 702911 mail.alert] unable to qualify my own domain name (db2) -- using short name
Nov 4 04:20:40 db2 cl_eventlogd[1803]: [ID 848580 daemon.error] Restarting on signal 1.
Nov 4 04:20:40 db2 cl_eventlogd[1803]: [ID 758663 daemon.error] Unexpected failure encountered.