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
550-Callback setup failed while verifying <userx@broken.example>\r
550-Called: 127.0.0.1\r
550-Sent: MAIL FROM:<>\r
550 Sender verify failed\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
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
550-Callback setup failed while verifying <userx@broken.example>\r
550-(result of an earlier callout reused).\r
550-The initial connection, or a HELO or MAIL FROM:<> command was\r