Zitat von Martijn Brinkers <[email protected]>:

Currently the domain certificate is only used for encrypting. For
decryption the gateway works like any email client i.e, decrypt when
possible.

That's what i suspected. "Domain-encryption" is thus "enforced" by the sender as of today because receiving site has no way to prevent decrypting for all recipients with *any* matching private-key...

So what I'm thinking of is to add "strict mode", In "strict
mode" a recipient will only receive the message decrypted if one of the
following is true:

1. the message is encrypted with a certificate with private key
containing an email address that matches the email address of the recipient.

or,

2. the message is encrypted with a certificate with private key that was
manually selected for the recipient

or,

3. the message is encrypted with a certificate with private key that was
manually selected for the domain of the recipient

On non-strict mode the gateway behaves like it does not i.e, decrypt
when possible.

Sounds like a sane solution to me.

Am I missing something?

The documentation needs to be adjusted. As of now i have difficulties to find the relevant parts for "S/MIME VPN" or "domain-encryption" or however we will call it in future. I'm sure i have read about it somewhere but i'm not able to find it again :-(

Many Thanks

Andreas


Attachment: smime.p7s
Description: S/MIME Cryptographic Signature

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