From CALLER@test.ex Tue Mar 02 09:44:33 1999
Received: from CALLER by the.local.host.name with local-smtp (Exim x.yz)
	(envelope-from <CALLER@test.ex>)
	id 10HmaX-0005vi-00
	for userx@test.ex; Tue, 2 Mar 1999 09:44:33 +0000
Date: Tue, 2 Mar 1999 09:44:33 +0000
Message-Id: <E10HmaX-0005vi-00@the.local.host.name>
.: this is legal
From: me@test.ex
Sender: CALLER_NAME <CALLER@test.ex>

.
This line follows ..

From CALLER@test.ex Tue Mar 02 09:44:33 1999
Received: from CALLER by the.local.host.name with local-smtp (Exim x.yz)
	(envelope-from <CALLER@test.ex>)
	id 10HmaY-0005vi-00
	for userx@test.ex; Tue, 2 Mar 1999 09:44:33 +0000
Date: Tue, 2 Mar 1999 09:44:33 +0000
Message-Id: <E10HmaY-0005vi-00@the.local.host.name>
From: me@test.ex
Sender: CALLER_NAME <CALLER@test.ex>

.
This line follows ..

From CALLER@test.ex Tue Mar 02 09:44:33 1999
Received: from CALLER by the.local.host.name with local (Exim x.yz)
	(envelope-from <CALLER@test.ex>)
	id 10HmaZ-0005vi-00
	for userx@test.ex; Tue, 2 Mar 1999 09:44:33 +0000
Date: Tue, 2 Mar 1999 09:44:33 +0000
Message-Id: <E10HmaZ-0005vi-00@the.local.host.name>
From: me@test.ex
..: this really is legal
Sender: CALLER_NAME <CALLER@test.ex>

.. two dots
.
That was one dot with -oi

From CALLER@test.ex Tue Mar 02 09:44:33 1999
Received: from CALLER by the.local.host.name with local (Exim x.yz)
	(envelope-from <CALLER@test.ex>)
	id 10HmbA-0005vi-00
	for userx@test.ex; Tue, 2 Mar 1999 09:44:33 +0000
Date: Tue, 2 Mar 1999 09:44:33 +0000
Message-Id: <E10HmbA-0005vi-00@the.local.host.name>
From: me@test.ex
..: this really is legal
Sender: CALLER_NAME <CALLER@test.ex>

.. two dots
.
That was one dot with -oi