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Cisco Bug: CSCvu39828 - ESA AsyncOS shows TLS connection limit exceeded for incoming emails

Last Modified

Jun 25, 2020

Products (1)

  • Cisco Email Security Appliance

Known Affected Releases


Description (partial)

Cisco ESA C680 with software version 12.1.0-089 stops receiving incoming emails with message TLS connection limit exceeded.

ESA running AsyncOS code version 12.1.0-089
ESA Public listener configured above 1000 connections.
Mail logs shows the following message:  
    "no messages injected within the timeout period"
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  • Full Description (including symptoms, conditions and workarounds)
  • Status
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