Timeout with check_smtp

Hi there all.

I am running Nagios 2.04b on CentOS 4.1

I am having a problem with checking the SMTP service on one of my hosts.
The server is sometime slow to respond to requests, with the result that I get notifications that the host is down. How do I increase the timeout before sending out a notification?

Any help would be appreciated.

Regards

Darryn

timeouts are in the nagios.cfg file.