On 14/06/2016 10:38, Suresh Ramasubramanian wrote:
On 14-Jun-2016, at 2:49 PM, 陈俊平 <chenjunp...@corp.netease.com
<mailto:chenjunp...@corp.netease.com>> wrote:
/>> The IP address you have specified does not comply with best
practices. Currently, the reverse DNS for this IP address is:
m172-177.vip.163.com <http://m172-177.vip.163.com/>. For more
information, please review the above "List Specifications" section,
or this best practice documentation
<http://spamauditor.org/best-practices/check-ip-reverse-dns>./
I think they are under the misapprehension that any hostname that has
two sets of numbers separated by a hyphen must necessarily be dynamic.
It's a fairly good indicator that, while it may not be dynamic, it has
probably not been deliberately set up for direct outgoing SMTP. One of
the first things mail administrators tend to do nowadays is set up
reverse DNS.
Remember that what they are trying to catch is people who are
inadvertently running bots which are sending out spam.
Changing the reverse DNS to the 'real' forward DNS name of the mail
server is the best idea.
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