+EHLO
+250- wotcher rverifier
+250-SIZE
+250 OK
+MAIL FROM:<> SIZE=
+250 OK
+RCPT TO
+250 OK
+QUIT
+250 OK
+****
+# receipient, size known, tgt supports size
+sudo exim -v -bs -oMa V4NET.0.0.3
+EHLO me
+MAIL FROM:<ok@localhost1> SIZE=420000
+RCPT TO:<z@remote.domain>
+QUIT
+****
+#
+server PORT_S
+220 Server ready
+EHLO
+250- wotcher rverifier
+250-SIZE
+250 OK
+MAIL FROM:<>
+250 OK
+RCPT TO
+250 OK
+QUIT
+250 OK
+****
+# receipient, size unknown, tgt supports size
+sudo exim -v -bs -oMa V4NET.0.0.3
+EHLO me
+MAIL FROM:<ok@localhost1>
+RCPT TO:<z@remote.domain>
+QUIT
+****
+#
+server PORT_S
+220 Server ready
+EHLO
+250- wotcher rverifier
+250-SIZE
+250 OK
+MAIL FROM:<ok@localhost1>
+250 OK
+RCPT TO:<myhost.test.ex-
+550 RANDOM NOT OK
+RSET
+250 OK
+MAIL FROM:<ok@localhost1> SIZE=
+250 OK
+RCPT TO:<z@remote.domain>
+250 OK
+QUIT
+250 OK
+****
+# receipient, size known, tgt supports size, use_sender, w/random
+# stdout should see SIZE on the main but not on the random receipient's MAIL FROM
+sudo exim -v -bs -oMa V4NET.0.0.7
+EHLO me
+MAIL FROM:<ok@localhost1> SIZE=420000
+RCPT TO:<z@remote.domain>
+QUIT
+****
+#
+server PORT_S
+220 Server ready