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Status Assessment
Workspace Domino
Categories Security
Created by Guest
Created on Feb 23, 2024

Ability to send trusted certificate list even if destination endpoint sends empty DN

Domino currently is designed to decline sending any certificate and requires the destination endpoint to send a list of trusted DN CAs.

As per EXO "Exchange sends its certificate along with the certificate request to Domino. In our certificate request, we do not specify a list of preferred CAs, since this is optional plus we do not have preferred CAs, in the sense that we can accept many of them and we will validate the trust later".

EXO do not specify a list of preferred CAs. Due to this Domino does not send the list of it's trusted CA certificate. And overall SMTP routing does not takes place.

Customer requirement is to have ability to enforce domino to send it's trusted certificate to EXO in response wherein EXO does not sent DA list.

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  • Admin
    Thomas Hampel
    Feb 27, 2024

    Domino is correctly following the RFC definition.

    In this idea, you are requesting Domino to (blindly) submit all(!) certificates available even if they dont match the target.

    This is the first time I've seen this request but doing all of that matching in a keyring file based environment - it would be extremely difficult to implement. 

    So do not expect this functionality to be changed anytime soon.