I have tried to read through the procedure for using :blackhole: or even :fail: for specific sender email address. From what I read the exim filter rules only allow for filtering all emails from a specific domain and does not allow for filtering of specific sent from addresses.
Maybe I misunderstood what I read.
Could someone provide some guidance in doing this?
I would also like to set up a filter to stop the delivery of email not in the personal address book of Thunderbird, since the Junk Filter Controls are not very effective.