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Posted to users@spamassassin.apache.org by Justin Mason <jm...@jmason.org> on 2007/05/09 16:57:41 UTC

Re: RDNS_NONE - SA 3.2.0

Duane Hill writes:
> 
> I've been doing some testing with v3.2.0 on my local machine and am seeing 
> a test that is triggering. I'm going to share the IP it is triggering on 
> in hopes someone can point out what I'm missing.
> 
> [71849] dbg: received-header: parsed as [ ip=162.42.148.100 rdns= helo=smtpgate.ndunet.com by=admin.mwci.net ident= envfrom= intl=0 id=119059853 auth= msa=0 ]
> ...
> [71849] dbg: rules: ran header rule RDNS_NONE ======> got hit: "[ip=162.42.148.100 rdns= "
> 
> Doing a lookup of the IP from where I am sitting, I can get the reverse 
> DNS:
> 
> Non-authoritative answer:
> 100.148.42.162.in-addr.arpa     name = smtpgate.ndunet.com.

sounds like the MTA in question is not performing rDNS lookups,
or else not recording them in a format SpamAssassin can read.

--j.

Re: RDNS_NONE - SA 3.2.0

Posted by Duane Hill <d....@yournetplus.com>.
On Wed, 9 May 2007, Justin Mason wrote:
>
> Duane Hill writes:
>>
>> I've been doing some testing with v3.2.0 on my local machine and am seeing
>> a test that is triggering. I'm going to share the IP it is triggering on
>> in hopes someone can point out what I'm missing.
>>
>> [71849] dbg: received-header: parsed as [ ip=162.42.148.100 rdns= helo=smtpgate.ndunet.com by=admin.mwci.net ident= envfrom= intl=0 id=119059853 auth= msa=0 ]
>> ...
>> [71849] dbg: rules: ran header rule RDNS_NONE ======> got hit: "[ip=162.42.148.100 rdns= "
>>
>> Doing a lookup of the IP from where I am sitting, I can get the reverse
>> DNS:
>>
>> Non-authoritative answer:
>> 100.148.42.162.in-addr.arpa     name = smtpgate.ndunet.com.
>
> sounds like the MTA in question is not performing rDNS lookups,
> or else not recording them in a format SpamAssassin can read.

You are correct now that I look. The MTA is CommuniGate and the header is:

   Received: from [162.42.148.100] (HELO smtpgate.ndunet.com)
     by admin.mwci.net (CommuniGate Pro SMTP 4.1.8)
     with ESMTP id 119059853 for d.hill@yournetplus.com;
     Wed, 09 May 2007 14:11:59 +0000

I can resolve 162.42.148.100 from the CommuniGate server successfully. 
And, as I reflect back, this has been brought up a very few times in the 
past about the headers being incorrect with that MTA on this list.