PURPOSE
Allow alias domains to be multiple, notably to be used in a multi company
environment where each company has its own alias domain.
SPECIFICATIONS
Store 'company_id' and 'alias_domain_id' on 'mail.message' model. It helps
knowing the environment that produced the message, notably
* for layouting: it will be used to improve company (and soon alias domain)
given for the email notification layout;
* for sending: it will be used to better compute mail-related values like
default from, return path, ...
When logging, those fields are kept false as anyway no notification is sent.
No need to fetch extra information.
Some sudo() are included in post_* methods, as portal may go through the
posting method, see 'test_portal_acls' in test_message_post.py file.
Task-36879 (Mail: Support Multi Domains Aliases)
Part-of: odoo/odoo#76734
Thibault Delavallée
7239115b4b