+From CALLER@myhost.test.ex Tue Mar 02 09:44:33 1999
+Received: from the.local.host.name ([ip4.ip4.ip4.ip4] helo=myhost.test.ex)
+ by myhost.test.ex with esmtp (Exim x.yz)
+ (envelope-from <CALLER@myhost.test.ex>)
+ id 10HmaY-0005vi-00
+ for a@test.ex; Tue, 2 Mar 1999 09:44:33 +0000
+DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=test.ex;
+ s=sel; h=From; bh=/Ab0giHZitYQbDhFszoqQRUkgqueaX9zatJttIU/plc=; b=LygSZ5OCGlY
+ /fF+ReGidcyXZw1l+NbhyXEkQYrSrQV/BqEL34Ql4v7PS6BPwkkdSojQ+b6vZUKwiFV5SoWb81N06
+ uJclVeogVylhuTqn6kGZWBX8eSh46NRjisXB8dn9KDdUc7ZKjIWKUdRAR5ssGIu7FE4kvc9FxlcOM
+ jSeqgM=;
+Received: from CALLER by myhost.test.ex with local (Exim x.yz)
+ (envelope-from <CALLER@myhost.test.ex>)
+ id 10HmaX-0005vi-00
+ for a@test.ex; Tue, 2 Mar 1999 09:44:33 +0000
+From: nobody@example.com
+From: second@example.com
+Message-Id: <E10HmaX-0005vi-00@myhost.test.ex>
+Sender: CALLER_NAME <CALLER@myhost.test.ex>
+Date: Tue, 2 Mar 1999 09:44:33 +0000
+
+content
+
+From CALLER@myhost.test.ex Tue Mar 02 09:44:33 1999
+Received: from the.local.host.name ([ip4.ip4.ip4.ip4] helo=myhost.test.ex)
+ by myhost.test.ex with esmtp (Exim x.yz)
+ (envelope-from <CALLER@myhost.test.ex>)
+ id 10HmbM-0005vi-00
+ for a@test.ex; Tue, 2 Mar 1999 09:44:33 +0000
+Received: from CALLER by myhost.test.ex with local (Exim x.yz)
+ (envelope-from <CALLER@myhost.test.ex>)
+ id 10HmbL-0005vi-00
+ for a@test.ex; Tue, 2 Mar 1999 09:44:33 +0000
+From: nobody@example.com
+Message-Id: <E10HmbL-0005vi-00@myhost.test.ex>
+Sender: CALLER_NAME <CALLER@myhost.test.ex>
+Date: Tue, 2 Mar 1999 09:44:33 +0000
+
+content
+