Alert on Data Not Sending

[PA-Lan-Tel]

I would like to have an alert sent when my syslog server stops sending logs to the Splunk application. Because I am very new to Splunk can I get some examples please. 

[bowesmana]

Very simple to write a search that you can set to trigger if the results are 0

| tstats count where index=your_syslog_index earliest=-2m@m latest=-1m@m

and then in your alert make it trigger on the custom trigger condition "search count = 0"

Note that if you have periods when you would not get syslog data for a minute, then it will trigger, so 

[PA-Lan-Tel]

Thanks Karma appreciate the quick response