******** SERVER ********
2017-07-30 18:51:05.712 exim x.yz daemon started: pid=p1234, no queue runs, listening for SMTP on port PORT_S
2017-07-30 18:51:05.712 10HmaX-000000005vi-0000 DKIM: d=test.ex s=sel c=simple/simple a=rsa-sha256 b=1024 [verification succeeded]
2017-07-30 18:51:05.712 10HmaX-000000005vi-0000 <= CALLER@bloggs.com H=(xxx) [127.0.0.1] P=esmtp K S=sss DKIM=test.ex id=qwerty1234@disco-zombie.net for a@test.ex
2017-07-30 18:51:05.712 10HmaY-000000005vi-0000 DKIM: d=test.ex s=sel c=simple/simple a=rsa-sha256 b=1024 [verification succeeded]
2017-07-30 18:51:05.712 10HmaY-000000005vi-0000 <= CALLER@bloggs.com H=(xxx) [127.0.0.1] P=esmtp K S=sss DKIM=test.ex id=qwerty1234@disco-zombie.net for a@test.ex