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Increase limit on number of messages that can be released from quarantine - Scanmail for Exchange (SMEX)

    • Updated:
    • 11 Dec 2020
    • Product/Version:
    • ScanMail for Exchange All
    • Platform:
Summary
If you have a large number of messages to release from quarantine in SMEX, you may run into an issue where you are restricted to releasing around 90-100  messages at a time, even though you have selected more, up to the maximum of 999 messages.

This happens as the request URL that is constructed exceeds the "Maximum Query String" setting in IIS of 2048 characters.
Details
Public

The setting can be modified via IIS Manager as outlined below:

  • On each SMEX server open Control Panel -> Administrative Tools -> IIS Manager
  • Browse to 'SMEX Web Site'
  • Double click on 'Request Filtering', and then the 'Edit Feature Settings...' link on the right hand side
  • Increase the "Maximum query string (Bytes)" field to 20480
  • Leave all other parameters at their default values

The new setting should take effect immediately, allowing you to release up to 999 messages from quarantine at a time.

Note: This fix works for FireFox, Chrome and MS Edge browsers.
As Internet Explorer truncates the URI to 2083 characters, it will still only resend about 100 messages.
Premium
Internal
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Solution Id:
000281933
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