Equisys technical notes

Technical guidance, explanations and fixes for our products

FIX: Multiple receipt notifications from the Zetafax Connector



ID: ZTN1035

This Zetafax technical note applies to:

  • Zetafax Connector version 5.5 and 6.0


When using the Zetafax connector version 5.5 or version 6.0 with Microsoft Exchange 5.5, you may receive duplicate messages from the connector (received faxes or notification of sent faxes).


Each incoming message is processed by a part of the connector called a thread.  By default the Zetafax 5.5 connector is configured with 4 threads, allowing it to process up to 4 incoming messages simultaneously.  However it is possible for two or more threads to begin processing the same message, which causes the duplication of messages.


To reduce the number of simultaneous messages to 1 work though the follwoing:

  1. Run the Microsoft Exchange Administrator program and select Site | Configuration | Connections | Zetafax Connector.  Choose Properties (File menu), then select the Options tab.
  2. Change the In Bound 'Threads:' value from 4 to 1 and click OK to save this configuration.
  3. Stop and restart the Zetafax connector from the Services applet in Control Panel.


Zetafax version 5.5 is no longer supported by Equisys. This issue is resolved with the latest version of Zetafax, If you wish to upgrade to the latest version of Zetafax please contact the Zetafax distributor for your country for more information or:

EQUISYS plc - United Kingdom

Phone: 020 7203 4000 (Intl +44 20 7203 4000)

Fax: 020 7203 4005 (Intl +44 20 7203 4005)

Email: http://www.equisys.com/technotes/sales@equisys.com


EQUISYS Inc - USA and Canada

Phone: (770) 772 7201

Fax: (770) 442 5789

Email: http://www.equisys.com/technotes/sales@zetafax.com


Last updated: 27 February 2003 (GC/GW)

Equisys Logo, Document Management and Expense Management for Business Central

Replaced by script

ROI on expense management

Discover the return on investment you can benefit from by automating your expense management system, and download our infographic on the subject.

Read more