Rule for DNS MX Check
mkettler at evi-inc.com
Mon Nov 6 21:01:15 GMT 2006
Side note for Max:
While you're at it, you might want fix your own DNS records:
Received: from mail.assuredata.com (assuredata.com [188.8.131.52] (may be
184.108.40.206 reverse DNS resolves as "assuredata.com", but that name has no
forward resolution. This is strictly invalid, as all records returned by
resolving a PTR MUST resolve back to the same IP.
(note: this is different than making assuptions about HELO strings)
# host 220.127.116.11
18.104.22.168.in-addr.arpa domain name pointer assuredata.com.
22.214.171.124.in-addr.arpa domain name pointer writeontime.us.
# host assuredata.com
Furthermore, the other record does resolve, but to a different IP address:
# host writeontime.us
writeontime.us has address 126.96.36.199
See RFC 1912 section 2.1
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