AirSyncFilter · The Phone Proxy

AirSyncFilter is an ActiveSync Proxy for Microsoft Exchange (EAS)

Works with:

Exchange 2010 and SBS 2011
Apple iPhone or iPad
Android or TouchDown or Roadsync
Windows Phone 7/8/10
Nokia Mail for Exchange


Filters data before they reach the phone
Prevent changing contacts
Prevent changing calendar items
Prevent emailing from the phone


Sort contacts by last name and company on Android phone
Stop deleting of calendar events on iPhone / iPad
Prevent iPhone / iPad to download all contact folders
Prevent Android from merging different contacts
Outlook AnyWhere reverse proxy
How AirSyncFilter works
AirSyncFilter monitors the ActiveSync / AirSync data flow between the device and Exchange. Based on rules, the data is manipulated so that the device or Exchange gets only filtered data.
System Requirements

Windows 2003-2022 with TCP/IP installed

Microsoft Exchange 2010

Linux with WINE


Decide if AirSyncFilter should be installed on the Exchange server or on a different machine:

On Exchange server

If you have only one Exchange server, then run AirSyncFilter on the Exchange server. The installation is much simpler when you run AirSyncFilter on the same machine as Exchange.

By default Exchange uses HTTPS (e.g. port 443 with TLS/SSL) for ActiveSync. Installing AirSyncFilter on port 80 will not change anything on the Exchange configuration.

And on your device you only need to disable TLS/SSL, which makes configuring the device much simpler. If you want to switch back to unfiltered ActiveSync, then the only thing you need to is is to enable TLS/SSL on the device.


If you have a cluster then you must run AirSyncFilter on a different machine, because AirSyncFilter doesn't support a cluster.

Once you decided on which machine you are installing AirSyncFilter, perform the following steps:

Run Setup.exe or create a directory on your machine and copy all the files into this directory

Start AirSyncFilter Admin (MBAdmin.exe) to configure AirSyncFilter

The first time you run AirSyncFilter you will be prompted for the following information:

The name or IP address of the Exchange server

If AirSyncFilter is running on the same machine as the Exchange server, then you can use localhost as the name.

The port Exchange listens

If AirSyncFilter is running on the same machine as the Exchange server than use port 443.

If Exchange uses TLS/SSL

By default Exchange uses TLS/SSL.

Running AirSyncFilter on the same machine as Exchange server

If you run AirSyncFilter on the same machine as the Exchange, then you must tell Exchange to listen on a different; e.g. not port 80, because only one application can listen to a specific port at one time.

Exchange 2010/2013 and SBS 2011

Start Internet Information Services (IIS) Manager and select Sites->Default Web Site, right click and select Edit Bindings.

In the dialog locate http and change the port from 80 to 81.

Then restart IIS so that the nbew binding takes place.

Note: Make sure you open port 80 on the firewall or else the device can't connect to AirSyncFilter.

Running AirSyncFilter on a different machine than the Exchange server

Start MBAdmin, select Options->General->Exchange->Name or IP address of the Exchange server and type in the name or IP address of the Exchange server.

Run AirSyncFilter as a service

Once you run AirSyncFilter as a service, errors will only be visible in the logfile or in the main window of MBAdmin. Consequently, before running it as a service you must first ensure that AirSyncFilter is running properly with no errors by launching it in Console Mode (i.e. starting it from an icon).

In general, installing AirSyncFilter as a service should be your last task and not your first.

Note: Keep in mind that AirSyncFilter needs to reside on a local disk or the service controller will not be able to start it. Also make sure MBAdmin.exe and MBServer.exe are in the same directory.

Install the service using the GUI

Start MBAdmin, select View->Service and here you can install, remove, start and stop the service. By default it is an AutoStart service and any time your computer is started, AirSyncFilter will start.

Note:After you have started AirSyncFilter as a service, verify that AirSyncFilter has no errors. You need to take a look into the logfile to do this or start MBAdmin and in the main window you see the logfile.

Install the service from the command line

Open a DOS box and change to the directory where AirSyncFilter is installed (usually C:\POPBeam or C:\Program Files\AirSyncFilter)

Installing AirSyncFilter as a service

Start MBServer.exe with the argument of install, by typing

MBServer install

at the command prompt and AirSyncFilter will create the service. By default it is an AutoStart service and any time your computer is started, AirSyncFilter will start. You can start and stop AirSyncFilter at any time via Control Panel

Note: After you have started AirSyncFilter as a service, verify that AirSyncFilter has no errors. You need to take a look into the logfile to do this or start MBAdmin and in the and in the main window you see the logfile.

Removing AirSyncFilter as a service

Start MBServer.exe with the argument of remove, by typing

MBServer remove

at the command prompt and AirSyncFilter will delete the service.

How to Stop AirSyncFilter

AirSyncFilter runs as a console application


Select Close from the system menu

Press Alt-F4

AirSyncFilter runs as a service

Open Control Panel, select Services, locate AirSyncFilter and press the button labeled Stop


net stop AirSyncFilter

at the command prompt

Upgrade to the latest Version

You will find the latest version of AirSyncFilter in the Download Center

setup_AirSyncFilter_??.exe searches for a previously installed AirSyncFilter and updates only the executable files. The settings, which are stored in AirSyncFilter.ini and *.dat, are not touched.

If the AirSyncFilter service is running, it is stopped and restarted after the update. In the unlikely event that a executable is locked, the setup program asks for a reboot to change the file. If you refuse the reboot, you need to manually reboot later to bring the new executable into affect.

Note: If you are upgrading from a very old version then you must reapply your registration number.

Helper Programs

Signal is a command line program that allows you to perform the same commands as from the Signal menu of MBAdmin.

LogView allows you to view the logfile in real time from any machine on your network. This is especially useful if MBServer runs as a service.

TLS/SSL Toolkit contains a generic certificate that you may use for a quick start. Download TLS/SSL Toolkit and extract TLSCert.pem and CACert.pem into the AirSyncFilter directory and then turn on TLS/SSL.

Licensing Agreement

AirSyncFilter ® is copyrighted 1993-2015 by DataEnter GmbH

This product and its documentation may not, in whole or in part, be copied, rent, leased, loaned, resold, assigned, sublicensed, modified, reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any other natural or computer language, in any form or by any means whatsoever, be it electronic, mechanical, magnetic, optical, manual or otherwise, without the prior written consent of DataEnter.

DataEnter makes no warranty or representation, either expressed or implied, with respect to the product AirSyncFilter and its documentation, their quality, performance, merchantability, or fitness for a particular purpose. DataEnter reserves the right to revise the user's guide and make changes to the content without obligation to notify any person or organization of such change. In no event will DataEnter be liable for any direct, indirect, special, incidental or consequential damages, real or imagined, resulting from the use or purchase of this software. Under no circumstances shall DataEnter's liability for damages exceed the price paid for the software license. Should any remedy hereunder be determined to have failed, all limitations of liability and exclusion of damages set forth above shall remain in full force and effect. The extent of the DataEnter's warranty for the software and its documentation is limited to physical defects of the distribution media containing the software. Contact DataEnter to obtain return authorization for the replacement diskette within 30 days of the original date of purchase. Any further statement made by agents, employees, distributors or dealers of DataEnter do not constitute warranties and are not binding. No employee of DataEnter has the authority to modify any portion of this warranty.

All brand and product names we refer to in the documentation are used solely for identification purposes and may be trademarks of other companies.

AirSyncFilter Standard Edition: DataEnter, (the licensor) grants the buyer (the licensee) the right to use this copy of AirSyncFilter Standard Edition (the program) on a single computer at a single location running a single instance and servicing a single Exchange server as long as the licensee complies with the terms of this license.

The licensor reserves the right to terminate this license if the licensee violates any part of the agreement. The licensee agrees to make copies of the program only for backup purposes. The licensee agrees not to copy the documentation and to take all necessary precautions to ensure that the backup copies of the software are not distributed to or acquired by other parties.

Support: Basic support by e-mail is free of charge

Upgrades, Updates: Updates are free, as long as the major version number does not change. (at present the major version number is v3.x)


v3.12 2022-02-16

  • New: URL permissions (URLPerm)
  • New: Prevent Android Ping-Sync-Loop (PingSyncLoopDelay=60)
  • New: Signal->Statistic
  • New: Show connected devices (View->Statistic, View->Connections)
  • Chg: OpenSSL updated to v3.0.1
  • Chg: TLS RC4-MD5 and RC4-SHA is no longer supported
  • Chg: Windows 2000 is no longer supported
  • Fix: Delete temp files before waiting for Exchange
©1991-2022 DataEnter GmbH
Wagramerstrasse 93/5/10 A-1220 Vienna, Austria
2022-02-16 / Phone
2022-02-16 / Tablet
Changed: 2022-02-16
Copyright ©1991-2022 DataEnter GmbH
Wagramerstrasse 93/5/10 A-1220 Vienna, Austria
Fax: +43 (1) 4120051