220 myhost.test.ex ESMTP Exim x.yz Tue, 2 Mar 1999 09:44:33 +0000 250-myhost.test.ex Hello CALLER at a.b.c [10.9.8.10] 250-SIZE 52428800 250-PIPELINING 250-STARTTLS 250 HELP 550 Administrative prohibition 221 myhost.test.ex closing connection