-x@mxt10.test.ex is undeliverable:
- all relevant MX records point to non-existent hosts or (invalidly) to IP addresses
+x@mxt10.test.ex is undeliverable: all relevant MX records point to non-existent hosts or (invalidly) to IP addresses
**** SMTP testing session as if from host V4NET.9.8.7
**** but without any ident (RFC 1413) callback.
**** This is not for real!
220 myhost.test.ex ESMTP Exim x.yz Tue, 2 Mar 1999 09:44:33 +0000\r
+250 myhost.test.ex Hello test [V4NET.9.8.7]\r
250 OK\r
550-Verification failed for <x@mxt10.test.ex>\r
550-It appears that the DNS operator for mxt10.test.ex\r
**** This is not for real!
220 myhost.test.ex ESMTP Exim x.yz Tue, 2 Mar 1999 09:44:33 +0000\r
+250 myhost.test.ex Hello test [V4NET.9.8.7]\r
250 OK\r
550-It appears that the DNS operator for mxt10.test.ex\r
550-has installed an invalid MX record with an IP address\r