**** This is not for real!
220 mail.test.ex ESMTP Exim x.yz Tue, 2 Mar 1999 09:44:33 +0000\r
+250 mail.test.ex Hello test [V4NET.0.0.0]\r
250 OK\r
250 Accepted\r
354 Enter message, ending with "." on a line by itself\r
-250 OK id=10HmaX-0005vi-00\r
+250 OK id=10HmaX-000000005vi-0000\r
**** SMTP testing: that is not a real message id!