Equisys technical notes

Technical guidance, explanations and fixes for our products

FIX: Zetafax SMTP Server does not work with certain SMTP email servers



ID: ZTN1831

This Zetafax technical note applies to:

  • Zetafax 2010


A ‘554 - synchronisation error’ response is given by the SMTP server when attempting an outbound connection from the Zetafax SMTP server. This has been observed as an issue on the Exim email server.


An SMTP connect acknowledgement was not properly checked during message setup.


A update is available for this issue. Please contact Equisys technical support for further details.


This issue was corrected in Zetafax 2011 and via a Zetafax 2010 update

Last updated: 19 May 2011 (NT/MW)

Keywords: SMTP Server synchronisation error

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