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  • Debugging a TLS session on error 5.7.1

    Hello, I have a connection to an external SMTP host which is aborted due to missing TLS encryption (571 5.7.1 Session encryption is required). TLS sessions are established to various external systems and to internal systems, only this one. S o I think…
  • SMG Update 23.4 rpm:1.0.1-493.1 - StartTLS errors

    Hello, I try to implement update version "23.4 rpm:1.0.1-493.1" yesterday. And run in StartTLS errors, seen in smg-smtp log-file. A lot of smtp connection are stopped and so I rollback. Error message: (SMTP)<2> TLS negotiation failed: SSL: (-1…