# lookup defer (senders and hosts conditions in ACL)
exim -bh 1.2.3.4
mail from:<userx@external.test.ex>
rcpt to:<userx@test.ex>
quit
****
exim -bh 4.3.2.1
mail from:<userx@external.test.ex>
rcpt to:<userx@test.ex>
quit
****