Certain environment variable do not propagate to the settings (page)

Description:

I am trying to populate smtp settings through environment variables when starting Rocket.Chat via docker-compose. So I put them under "environment" and restart it all. Some of the variables do populate (or change) the settings (page), at least one doesn't. And then there is one that has no place on the settings page but I still need to populate it (but I don't know its name).

Works:

• (OVERWRITE_SETTING_)SMTP_Host
• (OVERWRITE_SETTING_)SMTP_Port
• (OVERWRITE_SETTING_)SMTP_Username
• (OVERWRITE_SETTING_)SMTP_Password
• (OVERWRITE_SETTING_)From_Email

Doesn't work:

• (OVERWRITE_SETTING_)IgnoreTLS

Haven't tried:

• (OVERWRITE_SETTING_)SMTP_Pool (no idea what this does)

Don't know its name:

• "SMTP_Secure" (this would enable or disable verifying the mail server's SSL certificate)

Steps to reproduce:

1. Set up a new Rocket.Chat instance via docker-compose
2. put the environment variables mentioned above under "environment"
3. docker-compose up -d
4. go to admin portal, smtp settings, check settings

Expected behavior:

Setting the environment variable "SMTP_IgnoreTLS" to false or true should toggle the respective switch on the settings page (and change the actual setting)

Actual behavior:

I can put "true" or "false" - the setting doesn't change.

Server Setup Information:

• Version of Rocket.Chat Server: 4.5.5
• Operating System: Debian 11
• Deployment Method: docker-compose
• Number of Running Instances:
• DB Replicaset Oplog:
• NodeJS Version:
• MongoDB Version:

Client Setup Information

• Desktop App or Browser Version:
• Operating System:

Additional context

It all came up because I am trying to disable checking the mail server's SSL certificate but there is no such switch on the settings page. So in the community I got the tip to set "MAIL_URL" including "secure=false" which didn't work (at all). So I started trying to manipulate individual settings to figure out how this works. And so I found that it works in principle but not for "IgnoreTLS" (at least for me). And I don't know how the settings I am actually after is called (that would disable checking the mail server's SSL certificate).

Relevant logs:

(not releant)

Start by reproducing the SMTP configuration from a docker-compose environment and inspect the Admin SMTP settings page, focusing on the IgnoreTLS variable and the missing secure-certificate option. Trace how these environment variables map to settings, then verify that IgnoreTLS changes the setting and that the correct certificate-related setting name is identified.