nik600 hotmail wrote:
>
> I'm experiencing a strange problem with RDNS_NONE.
>
> On the same sender host, sometimes it is marked with RDNS_NONE, and
> sometimes not.
>
> The host has a reverse dns!
>
> Example:
> Received: from dadosoftware.com (dns2.dadosoftware.com [217.199.13.2]) ->
> OK
>
> Received: from dadosoftware.com (unknown [217.199.13.2]) -> FALSE POSITIVE
>
> But 217.199.13.2 has a reverse dns!
> 2.13.199.217.in-addr.arpa. 11894 IN PTR dns2.dadosoftware.com.
>
> Who decides the presence of RDNS_NONE ?
> A real dns check or a parsing of the email headers?
>
> And, in case of parse who decides to write dns2.dadosoftware.com
> [217.199.13.2] instead of unknown [217.199.13.2]?
>
> Thanks to all in advance.
>
> --
> /*************/
> nik600
> http://www.kumbe.it
>
>
I don't sure will it help or not but I've faced with very similar issue:
******** Received: from relay.blablabla.net (unknown [xxx.xxx.xxx.xxx])
**********
host relay.blablabla.net has PTR record:
host xxx.xxx.xxx.xxx
xxx.xxx.xxx.xxx.in-addr.arpa domain name pointer relay.blablabla.net.
then I tried:
host relay.blablabla.net
relay.blablabla.net has address yyy.yyy.yyy.yyy
and:
host yyy.yyy.yyy.yyy
yyy.yyy.yyy.yyy.in-addr.arpa domain name pointer relay.blablabla.net.
So. I see that the host blablabla has two A records registered in DNS and
two PTR.
All I had to do in this case is:
/etc/postfix/master.cf:
smtp unix - - n - - smtp -o
smtp_bind_address=yyy.yyy.yyy.yyy
It helped me.
Thank you.
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