==== REQUIRED BASIC INFO OF YOUR IREDMAIL SERVER ====
- iRedMail version: 1.0 MARIADB edition (Deployed with the downloadable installer)
- Linux/BSD distribution name and version: Ubuntu 18.04
- Web server: Nginx
- Manage mail accounts with iRedAdmin-Pro
====

Hello!

We've just tried to enable custom from address option in the SOGo configuration (SOGoMailCustomFromEnabled=YES) because we want to allow users to send emails from their related aliases. ALLOWED_LOGIN_MISMATCH_LIST_MEMBER is also enabled in iredapd and it works well on SMTP.

After SOGo restart the users can add additional addresses in their mail settings but the default email address changes to "YES" string instead of the original email address so the they have to set their mailbox address too manually. If we remove the SOGoMailCustomFromEnabled from SOGo config the default mail address changes back from "YES" to the original address. It seems it's only related to those users who have never updated their identities in SOGo.

On a new SOGo test instance (without iRedMail installation) the SOGoMailCustomFromEnabled option works as we expect and the email address doesn't change to "YES" at all.

Could you help us what did we wrong in our configuration?

Thank you for your help!
Best regards,
Adam