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Cisco Bug: CSCuq37845 - Outbound TLS fails with Key Exchange error SSL3_GET_KEY_EXCHANGE:EC lib

Last Modified

Nov 27, 2020

Products (1)

  • Cisco IronPort Email Security Appliance Software

Known Affected Releases

8.0.1-023 8.0.1-111 8.5.6-074 8.6.0-047

Description (partial)

Symptom:
Email Delivery to specific destination domains using TLS (Starttls) fails with following error displayed in the mail_logs:

DCID ... TLS failed: (336121872, 'error:1408D010:SSL routines:SSL3_GET_KEY_EXCHANGE:EC lib')

Conditions:
TLS (Starttls) is enabled for the specific destination in the destination controls settings
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