capacity verifiedcriticalWritten by the Hub

The widest table in the schema and the centre of MailerQ's sending policy. A row carries three families of limit — per domain, per sending address, per connection — plus the whole timeout set for an SMTP conversation, the security mode, and the choices for what to do when a connection is lost or a response arrives at an unexpected moment. A row on its own does nothing: capacity_rules decides which traffic it applies to. That separation is what allows one profile to serve many domains, and it is also why deleting a profile while rules point at it is a mistake nothing prevents. For Hub this is the table warm-up writes to. A warm-up stage is a set of numbers in a row here, and moving to the next stage is an update plus a reload message.