Bringing this here prior to taking some valuable support time up. I've just added my first mail account since the v12 upgrade and come across an issue where mail to the mailbox was rejected on the mail server. Having dug into the issue I resolved this by adding the domain to /etc/postfix/vdomains (and then creating the DB file with the postmap command, and reloading postfix).
My question is, what should I expect to see in this file? I would have expected it to either be every domain which had a mailbox (aside of the auto-created website email), or, every domain. But I have a mix of domains with and without mail accounts, including some staging sites, but definitely not ALL domains (or all staging domains).
All my other accounts were added pre-v12 upgrade, but, that's not to say the problem didn't exist before then, just that I've only just come across a domain that has this issue because I don't create mail on most domains. For info, the domain was added pre-v11.
