Base for this plugin was great article about EAS protocol written by Andreas Helland (Digging Into The Exchange ActiveSync Protocol) at

Command line: Domain Username Password DeviceID DeviceType ActiveSyncServer UniqueFolder


This plugin will attempt to connect to EAS (Exchange Active Sync) server and get Folder information for specific user Scripts is checking existing of some unique Folder in the output.


  • This plugin requires that the curl program is installed.
  • You need to copy binary file activesync.txt to: /usr/lib/nagios/plugins/ or change in script to reflect your configuration (--data-binary @/usr/lib/nagios/plugins/activesync.txt) (If you are interested in the byte sequence here goes: 03 01 6a 00 00 07 56 52 03 30 00 01 01.)
  • You need to configure Active Sync manually to know DeviceID and DeviceType information for that you must use real mobile device or emulator to create partnership
  • You need to create unique folder in user's mailbox (eg. Nagios2759671)
  • MS-ASProtocolVersion:
    • 12.0 (Exchange 2007 RTM)
    • 14.0 (Exchange 2010)
    • 12.1 (Exchange 2007 SP1)
    • 12.0 (Exchange 2007 RTM)


$1 - domain name  
$2 - username  
$3 - password (Note: avoid using of special character e.g.: escalation mark!)
$4 - DeviceID - A unique id for the device that is synchronizing (you gen retrieve that information from owa (Outlook web access)) or using power shell: 
                            Get-ActiveSyncDevice -Identity "user"
                            Get-ActiveSyncDevice -Mailbox "domain\user" 
$5 - DeviceType - An id for the device/model you are using, or the ActiveSync client. (can be anything eg. PocketPC or iPhone) 
$6 - activesyncserver (eg.
$7 - UniqueFolder (eg. Nagios2759671)

Example of command definitions for nagios:

define command {
  command_name    check_activesync
  command_line    /usr/lib/nagios/plugins/ $ARG1$ $ARG2$ $ARG3$ $ARG4$ $ARG5$ $ARG6$ $ARG7$