-Connecting to 127.0.0.1 port 1225 ... connected
+Connecting to 127.0.0.1 port 1224 ... connected
??? 220
<<< 220 myhost.test.ex ESMTP Exim x.yz Tue, 2 Mar 1999 09:44:33 +0000
>>> helo testclient
<<< 250 Accepted
>>> quit
End of script
-Connecting to 127.0.0.1 port 1225 ... connected
+Connecting to ip4.ip4.ip4.ip4 port 1224 ... connected
??? 220
<<< 220 myhost.test.ex ESMTP Exim x.yz Tue, 2 Mar 1999 09:44:33 +0000
>>> helo testclient
??? 250
-<<< 250 myhost.test.ex Hello testclient [127.0.0.1]
+<<< 250 myhost.test.ex Hello testclient [ip4.ip4.ip4.ip4]
>>> mail from:<b@test.example.com>
??? 250
<<< 250 OK
<<< 250 Accepted
>>> quit
End of script
-Connecting to 127.0.0.1 port 1224 ... connected
+Connecting to 127.0.0.1 port 1225 ... connected
??? 220
<<< 220 myhost.test.ex ESMTP Exim x.yz Tue, 2 Mar 1999 09:44:33 +0000
>>> helo testclient
<<< 250 Accepted
>>> quit
End of script
+Connecting to ip4.ip4.ip4.ip4 port 1225 ... connected
+??? 220
+<<< 220 myhost.test.ex ESMTP Exim x.yz Tue, 2 Mar 1999 09:44:33 +0000
+>>> helo testclient
+??? 250
+<<< 250 myhost.test.ex Hello testclient [ip4.ip4.ip4.ip4]
+>>> mail from:<b@test.example.com>
+??? 250
+<<< 250 OK
+>>> rcpt to:<fred@test.ex>
+??? 550
+<<< 550 Administrative prohibition
+>>> quit
+End of script
+Connecting to 127.0.0.1 port 1223 ... connected
+??? 220
+<<< 220 myhost.test.ex ESMTP Exim x.yz Tue, 2 Mar 1999 09:44:33 +0000
+>>> helo testclient
+??? 250
+<<< 250 myhost.test.ex Hello testclient [127.0.0.1]
+>>> mail from:<c@example.com>
+??? 250
+<<< 250 OK
+>>> rcpt to:<fred@test.ex>
+??? 550
+<<< 550 Administrative prohibition
+>>> quit
+End of script