Re: [spamdyke-users] Whitelist an IP for the DENIED_RDNS_MISSING error?

[Quinn Comendant via spamdyke-users]

On Wed, 5 Aug 2015 20:02:51 -0500, Sam Clippinger via spamdyke-users wrote:
> But to answer your question, yes!  It is possible to turn off the 
> rDNS filters for just that one IP.  The feature you need is a 
> configuration directory.  Create a folder structure on the server 
> like this:
>   /some/path/_ip_/64/34/221
> […]

Ooh, that's clever! I've done, and we'll see.

Thx,
Q
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Re: [spamdyke-users] Whitelist an IP for the DENIED_RDNS_MISSING error?

[Sam Clippinger via spamdyke-users]

Actually, spamdyke is correct -- that IP does not have a valid reverse DNS 
name.  When I look up 10.221.34.64.in-addr.arpa, no PTR records are returned, 
only one CNAME record: mail.lassosoft.com.  Queries for mail.lassosoft.com also 
return no PTR records, only A records.  This setup is not valid; the best way 
to fix it would be to change the record for 10.221.34.64.in-addr.arpa from a 
CNAME to a PTR with the same value.  I'm guessing whoever created the existing 
record didn't really understand how rDNS works and created a record that seemed 
close enough.

But to answer your question, yes!  It is possible to turn off the rDNS filters 
for just that one IP.  The feature you need is a configuration directory.  
Create a folder structure on the server like this:
/some/path/_ip_/64/34/221
Then create a file in the deepest folder named "10":
/some/path/_ip_/64/34/221/10
In that file, add the lines to turn off the rDNS filters:
reject-empty-rdns=0
reject-unresolvable-rdns=0
Last, add a line to your main spamdyke config file to use the configuration 
directory:
config-dir=/some/path
That should do it!

Full documentation of the configuration directory feature is here:
http://spamdyke.org/documentation/README.html#CONFIGURATION_DIR

-- Sam Clippinger




On Aug 5, 2015, at 7:16 PM, Quinn Comendant via spamdyke-users 
 wrote:

> We're experiencing blocked email due to a DENIED_RDNS_MISSING error, although 
> the domain PTR records do resolve:
> 
>  $ dig -x 64.34.221.10 +short
>  mail.lassosoft.com.
> 
> Error:
> 
>  2015-08-05 18:56:56.452648500 spamdyke[5681]: DENIED_RDNS_MISSING from: 
> donotre...@lassosoft.com to: u...@example.com origin_ip: 64.34.221.10 
> origin_rdns: (unknown) auth: (unknown) encryption: TLS reason: (empty)
> 
> I've seen the recent thread on this where Sam explains that it could be DNS 
> issues 
> (). 
> 
> My question is, can we whitelist an IP for the DENIED_RDNS_MISSING error?
> 
> Quinn
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