Export report error request failed. Failed to export report, 5.3.3 Unrecognized command.

[QN]

Hello All,

I am getting the following error recently when trying to export a report in GeoSCADA.

"Export report error request failed. Failed to export report, 5.3.3 Unrecognized command."

Note: Configurations have not been changed, and it only affected this report recently. Other reports still work just fine.

What could be the cause and solution to this issue? 

Thank you.

[AndrewScott]

I presume you're exporting a Crystal Report. I would expect the event message to be formatted slightly differently:

"Export report request failed - Failed to export report, <error> (<time>)"

I also presume you're exporting to an email destination. The "5.3.3 Unrecognized command" error is coming from your mail server (probably Microsoft Exchange). A search shows lots of information about this error:

https://www.google.co.uk/search?q=5.3.3+Unrecognized+command 

[QN]

Thank you @AndrewScott for the response. That is correct, I was trying to export to an email destination. The odd thing is that it only affected this one report. I have other reports that worked just fine. There was no configuration changes since the error occurred.