Postfix: DH-1024 weak key exchange is enabled.

Solution Verified - Updated -


  • Key exchange (dh 1024) of lower strength than certificate key.
  • Weak SSL/TLS Key Exchange vulnerability on 25 Port.
  • How to generate DH Parameter file with custom key size ?


  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux 8
  • Red Hat Enterprise Linux 9
  • Postfix

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