Le 07/10/2013 20:37, li...@rhsoft.net a écrit :
> Am 07.10.2013 20:30, schrieb Erwan David:
>> Le 07/10/2013 20:24, li...@rhsoft.net a écrit :
>>> Am 07.10.2013 19:42, schrieb Erwan David:
>>>> That's a matter of policy, if you cannot afford to loose legitimate
>>>> email, you may.
>>> show me one legitimate mail server in 2013 without a PTR
>>>
>>> as server-admin you need to RTFM and anybody which is connecting
>>> a mailserver to the internet not having a PTR or coming with
>>> the lousy excuse "my ISP doe snot support" instead switch to
>>> a sane ISP did not RTFM and has to accept that others do not
>>> accept messages from him - the is no "if" and no "but"
>> You may also completely stop accepting email, thus you will have no spam
>> at all. For me it is more important not to loose legitimate email.
>> You may have a different opinion.
>>
>> But it is false to say tjat a mail server without reverse surely is a
>> spammer.
>>
>> Spammers can afford reverse
> it is very likely that it is a spammer or at least not any important mail
>
> if someone has important mail to send he will learn the hard way that
> all the "best practices" are there for a reason - hence he get a
> clear reject message and if someone refuses to fix it's setup which
> is done within seconds -> his problem
>
> for every rejected legit mail from a badly configured server missing a
> PTR you block 1000000 spam mails
>
> i even go so far if someone complains that his messages are rejected
> because a missing PTR i recommend to fire his admin and in doubt the
> PTR has to match the A-record
>
Tat's false. The best you can hope is that one of the A (or AAAA) record
for one of the PTR of the connecting address is the connecting address
You may have several PTR per IP and several address per name.
