Email Sent To Gmail Doesn't Look Like It Supports S/MIME Encryption. Does iRedMail support S/MIME?

iredmail / iRedMail

Full-featured, open source mail server solution for mainstream Linux/BSD distributions.

https://www.iredmail.org/

GNU General Public License v3.0

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Closed vthg2themax closed 3 years ago

vthg2themax commented 3 years ago

REQUIRED BASIC INFO OF YOUR IREDMAIL SERVER:

iRedMail version (check /etc/iredmail-release): 1.3.2
Deployed with iRedMail Easy or the downloadable installer? Yes.
Linux/BSD distribution name and version: Ubuntu 20.04LTS
Store mail accounts in which backend (LDAP/MySQL/PGSQL): PGSQL
Web server (Apache or Nginx): Nginx.
Manage mail accounts with iRedAdmin-Pro? No.
[IMPORTANT] Related original log or error message is required if you're experiencing an issue.

iredmail commented 3 years ago

S/MIME is a client side feature, not a mail server side.
SOGo groupware supports it, you can give it a try: https://sogo.nu/files/docs/SOGoInstallationGuide.html#_smime_support_in_sogo
Roundcube plugin enigma supports pgp, check its README page for more details: https://github.com/roundcube/roundcubemail/tree/master/plugins/enigma