monitoring server

Hello,
I work with 4 flavour of UNIX ( AIX, IRIX, HPUX and SUN). I have a problem maintaing the system. can any one let me know of the software or script that will check the date,time services running or not, perticular machine is up or not and post a mail with all the details.

It would be great if any one can help me on this.

Regards,
Pradeep Kulkarni.

there are people that use a "central" syslogd facility (at least on FreeBSD, Linux, etc.) to checkout whatever happens in all their systems

I'm sorry this did not work. can any one help me with some other solution.

Possibly something like Nagios would be of use?

http://www.nagios.org/

There are lots of other options