Send mail on event log error trigger safe check frequency

Posted by Zeb Rawnsley on Server Fault See other posts from Server Fault or by Zeb Rawnsley
Published on 2012-12-16T00:16:30Z Indexed on 2012/12/16 5:07 UTC
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I want to use powershell to alert me when an error occurs in the event viewer on my new Win2k12 Standard Server, I was thinking I could have the script execute every 10mins but don't want to put any strain on the server just for event log checking, here is the powershell script I want to use:

$SystemErrors = Get-EventLog System | Where-Object { $_.EntryType -eq "Error" }
If ($SystemErrors.Length -gt 0) {
  Send-MailMessage -To "[email protected]" -From $env:COMPUTERNAME +" -Subject $env:COMPUTERNAME + " System Errors" -SmtpServer "" -Priority High

What is a safe frequency I can run this script at without hurting my server?


Intel Xeon E5410 @ 2.33GHz x2
3x 7200RPM S-ATA 1TB (2x RAID1)


With the help of Mathias R. Jessen's answer, I ended up attaching an event to the application & system log with the following script:


$ComputerName = $env:COMPUTERNAME;

$To = "[email protected]"
$From = $ComputerName + "";
$Subject = $ComputerName + " " + $LogName + " Error";
$SmtpServer = "";

$AppErrorEvent = Get-EventLog $LogName -Newest 1 | Where-Object { $_.EntryType -eq "Error" };

If ($AppErrorEvent.Length -eq 1) { 
    $AppErrorEventString = $AppErrorEvent | Format-List | Out-String;

    Send-MailMessage -To $To -From $From -Subject $Subject -Body $AppErrorEventString -SmtpServer $SmtpServer -Priority High;

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