Send an encrypted mail to an alias

[philipe]

Hello;
I use OX GUARD and have difficulty working and understanding. My problem is:
How to send an encrypted mail to an offset address as an alias
for example
User1: user1 @ domain1.com, test @ domain1.com
User2: user2 @ domain1.com, test @ domain1.com
User3: user3 @ domain1.com, test @ domain1.com
We want to send an email to test@domaine1.com
Question 1:
What encryption key is used when sending mail to test@domain1.com?
How can user1, user2, user3 read the mail? What private key is used?
For information the versions used are:
Open-xchange-appsuite-7.8.2-14_15.1.noarch
Open-xchange-guard-2.4.2-6_12.1.noarch
thank you in advance

[Wolfgang Rosenauer]

I do not think what you try is even possible.
OX does not allow non-unique mail addresses and aliases and even if you could provision them in different contexts which might be possible your setup will always be "undefined" IMHO.
If you want to use an (external) distribution list which sends a mail to multiple users Guard could not detect the target mailbox and would create a guest account on the sender site and a new key. Unless one of the users changes the password for the guest account all users should have access to the guest mail.

[philipe]

thank you for your reply ;
If I understand correctly I do not assign the same alias to several users, even if this address is used only when receiving

Explanation:
/opt/open-xchange/sbin/changeuser -c 1 -A XXXX -P yyyy -u user1 -a user1@ domain1.com, test@domain1.com
/opt/open-xchange/sbin/changeuser -c 1 -A XXXX -P yyyy -u user2 -a user2@ domain1.com, test@domain1.com

The address replaces the internal mailing lists. This address will not be used for sending
Thanks