nagios发不出邮件解决办法

最近在外网新搭了一套nagios系统,开始几天系统出了问题nagios还能发邮件通知,可最近出了问题老收不到邮件,手工在服务器上发邮件又可以,后来一查sendmail的日志和nagios的日志,发现sendmail的邮件只有邮件信息,没有进邮件队列.nagios那边的日志又报下面的警告:

[1292174436] Warning: Contact 'wahaha' service notification command '/usr/bin/printf "%b" "***** Nagios *****\n\nNotification Type: PROBLEM\n\nService: /boot\nHost: hostname\nAddress: 192.168.3.11\nState: CRITICAL\n\nDate/Time: Mon Dec 13 01:20:05 CST 2010\n\nAdditional Info:\n\nDISK CRITICAL - free space: /boot
8 MB (8% inode=99%):" | /bin/mail -s "** PROBLEM Service Alert: hostname//boot is CRITICAL **" [e-mail]' timed out after 30 seconds

从上面的日志看,应该是发送超时了,也就是说设置的通知时间还不够能让sendmail发出邮件的时间,到这就好办了.通过修改nagios的配置文件nagios.cfg,将notification_timeout=30改为notification_timeout=120后重起nagios.发现已经能收到报警邮件了,到此问题解决!