I have encountered a problem where user requires a specific mail policy from a sender 'test@example.com', but because example.com uses BATV, the envelope sender coming in is 'prvs=xxxxxx=test@example.com' instead and is not caught by the mail policy.
I know that there are workarounds, such as specifying sender as '@example.com' instead, or using message filters regex.
However, is there any way to specify a user in mail policy like '*test@example.com' so that it can catch BATV addresses?