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Cisco Bug: CSCuq31872 - Messages with "illegal characters" in "To:" header will hang encryption

Last Modified

Nov 27, 2020

Products (1)

  • Cisco IronPort Email Security Appliance Software

Known Affected Releases


Description (partial)

- Messages pending encryption are "stuck" in "the.encryption.queue".
- Some messages that should have been encrypted are bounced with the following error:

5.x.3 - Temporary PXE Encryption failure. Please try resending the message. If the problem persists, please contact your administrator. (Encryption operation expired due to key server communication problems or resource constraints.) ('000', [])

- One or more messages in the encryption queue contains an illegal character in a recipient's email address.  This character is most likely added from the mail client when the message was generated.
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Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
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