This might not be a bug, but maybe more of a question, but I didn't see any other possibility to ask.
We're using postman and have have added the possibility to let users block other users via an exchange filter. It works great, but now we've discovered that when you reply to a message, the exchange filter doesn't get applied to the sender/recipient, only to sender/additional recipients entered in the form. Is that a bug or on purpose? If the latter, is there an easy way to have user blocking also affect the recipient of replies?