+550 Administrative prohibition\r
+221 myhost.test.ex closing connection\r
+220 myhost.test.ex ESMTP Exim x.yz Tue, 2 Mar 1999 09:44:33 +0000\r
+250 myhost.test.ex Hello CALLER at test\r
+250 OK\r
+250 Accepted\r
+354 Enter message, ending with "." on a line by itself\r
+250 OK id=10HmbE-0005vi-00\r