Author: Steve Man

Scenario:  You received complaints that ActiveSync isn’t working for some users in your environment.  Your environment consists of large number of servers and you need a quick way of determining which server is not able to process ActiveSync requests.

Troubleshooting Steps:

1. Check the server component state on each server: Get-exchangeserver EX* | Get-servercomponentstate | Where {($_.Component -eq “ActiveSyncProxy”) -and ($_.state -ne “Active”)}
2. Test-ActiveSyncConnectivity:$1 = get-credential
   $Servers = Get-clientaccessserver esg* | Where AdminDisplayVersion -like *15*
   $final = @()
   $Servers | %{$final += Test-ActiveSyncConnectivity -AllowUnsecureAccess:$true -ClientAccessServer $_ -MailboxCredential $1 -lightmode}
3. Check Logs on the server:
   1. Verify EAS connections are being logged in the IIS Logs: C:inetpublogslogfilesw3svc1
   2. Verify the EAS logs are generating activity. EAS logs should be generated every hour:  c:Program FilesMicrosoftExchange ServerV15LoggingHttpProxyEas
4. Go to the URL and test.  A working server produces  DeviceIdMissingOrInvalid as an error after authentication:  https://<server fqdn>/Microsoft-server-activesync

Scenario:  You want to monitor the ActiveSyncProxy server component state. If ActiveSyncProxy becomes inactive, you want the script to automatically resolve the issue and to send an alert via email.

Script:

#Collect Servers
$1 = Get-exchangeserver Ex* | Get-servercomponentstate | Where {($_.Component -eq "ActiveSyncProxy") -and ($_.state -ne "Active")}

#Loop Servers for Component State
$1 | Select -ExpandProperty Identity | %{$s = [string]$_;Set-servercomponentstate $s -component ActiveSyncProxy -state Active -Requester HealthAPI}

#Send an Email
If($1 -ne $null){
$1_body = $1 | Out-String
#Email
$body =""
$smtp = "smtp.domain.com"
[string[]]$to = "Steve@Domain.com","Fred@Domain.com"
$from = "EASMonitor@domain.com"
$subject = "ActiveSync Monitor - Activesync is currently not working on a server" 
$body += "<b><Font color=Black>There could be an issue with ActiveSync as the server component state is not active on the following servers: </b></font><br><br>"
$body += "<Font color=red>$1_body </font><br><br><br>"
#Send Email
send-MailMessage -SmtpServer $smtp -To $to -From $from -Subject $subject -Body $body -BodyAsHtml -Priority high
}