Spamassasin always RDNS_NONE

[basti <ma...@unix-solution.de>]

Hello,
all my incomming mails get always "1.3 RDNS_NONE" also with a vaild PTR.

A part of the mail header look like:

Received: from [151.189.21.44] (helo=mail-in-04.arcor-online.net)
X-SA-Score: 1.3


# dig -x 151.189.21.44 +short && dig mail-in-04.arcor-online.net. +short
mail-in-04.arcor-online.net.
151.189.21.44


# spamassassin -V
SpamAssassin version 3.3.2
  running on Perl version 5.14.2

on Debian 7 (Wheezy)

Thanks for any help.
Regards, Basti

Re: Spamassasin always RDNS_NONE

[Bill Cole <sa...@billmail.scconsult.com>]

On 23 Jul 2015, at 8:15, Matus UHLAR - fantomas wrote:

> On 23.07.15 13:47, basti wrote:
>> all my incomming mails get always "1.3 RDNS_NONE" also with a vaild 
>> PTR.
>
> Does your mail server check for reverse DNS?
> If not, turn it on.

+1

This is important for more than SpamAssassin. Because DNS can be very 
ephemeral and changes may leave no evidence, knowing what DNS said at 
the moment a message was received is useful if you end up wanting to 
find patterns in your spam.

Re: Spamassasin always RDNS_NONE

[basti <ma...@unix-solution.de>]

Thanks alot.

On 23.07.2015 14:15, Matus UHLAR - fantomas wrote:
> On 23.07.15 13:47, basti wrote:
>> all my incomming mails get always "1.3 RDNS_NONE" also with a vaild PTR.
>
> Does your mail server check for reverse DNS?
> If not, turn it on.
>

Re: Spamassasin always RDNS_NONE

[Matus UHLAR - fantomas <uh...@fantomas.sk>]

On 23.07.15 13:47, basti wrote:
>all my incomming mails get always "1.3 RDNS_NONE" also with a vaild PTR.

Does your mail server check for reverse DNS?
If not, turn it on.

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