hostname ne blah.blah.com hostname ne foo.blah.com

These are evaluated as "and", so you can put a lot of "not equals" entries in. You could even write a regular expression to cover all those devices.

BTW, if you don't have any filters, just use * in the match box, as using "hostname match *" will actually run a regular expression matching everything, rather than just, matching everything!

adam.

Sent from Mailbird [http://www.getmailbird.com/?utm_source=Mailbird&utm_medium=email&utm...] On 03/05/2016 06:08:03, Michael mich4@gmx.de wrote: Hi @ all,   I´ve a little question/problem with one alert-checker ...   I defined an alert-checker 'processor usage above 95%' ... here´re the details:   Check condition: processor_usage gt 95 Device match: hostname match * Entity match: processor_descr gt 95     So, generally the checker worked fine, but here´s the problem: we´ve a few Servers which are doing jobs during the night, where the processor useage can grow up to 100% over a few hours ... but this is normal and ok.   Because of the alert-checker I get now every few minutes an alert-mail ... so my question, how can I get the alert-checker modified, so that only the involved servers will be except out from this checker, but all other servers don´t.   Thanks for help Regards,   Michael