I’ve been using mailcow for a long time now and I think it is working great for me, however I encountered a problem with one of the server users.
One user used his domain to send mass emails and marketing emails and got my IP blocked from sending to any Microsoft servers at all.
I contacted my hosting provider and they managed to solve the problem, and I want to prevent this from happening ever again, so I used a limit for sending emails for this entire domain.
But I would love to get statistics on how many emails got sent by each domain in daily and monthly matter, to track and try to limit this problem in the future.
If you have any other ideas/ways to track the sent emails or prevent mass mailing and newsletters please let me know guys.