Overview
In Odoo 16, changing the default email address that the system uses was accomplished by setting the following variables in Technical–> System Parameters:
mail.bounce.alias
mail.catchall.alias
mail.catchall.domain
mail.default.from
In Odoo 17, these configurations are made in the GUI. It’s worth noting that it appears this setting is only manageable through the superadmin account (I’ll check this another time and update as appropriate).
To check your current configuration, go to Settings –> Companies –> Update Info. When in the Company Information page, you will see a box similar to the following (company specifics redacted):
In this example, the fields for Bounce, Catchall, and Default From are all listed but greyed out. The account I’m currently logged into cannot change this setting. Switching to my superadmin account gives the following page for company info (company specifics redacted):
Click on “Internal link” to view the following page, where you can configure the settings (redacted):
Once you make your changes, be sure to save before exiting. I will revisit this article at a later date to provide better screenshots, as well as to clarify the permissions required to update these fields.