Markus,

The idea is, that we don't want to block VALID email.  So, if a reverse
lookup times out, there is no way to determine if there is no valid match
and we can't just assume that it is SPAM.

Time-outs could be temporary problems with a particular DNS server, it could
be a routing problem on the Internet - any number of reasons.

Best Regards
Andy Schmidt

Phone:  +1 201 934-3414 x20 (Business)
Fax:    +1 201 934-9206 



-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Markus Gufler
Sent: Saturday, June 14, 2003 09:22 PM
To: [EMAIL PROTECTED]
Subject: [Declude.JunkMail] Spamdomains lookup timeout


Hi all, 

I'm not sure about this, but I've seen some spam messages coming from
domains contained in our sd-file. (hotmail.com) However the messages hasn't
failed the SPAMDOMAINS test.

For example from the Sender-IP: 218.25.255.18

Can it be, because it's not possible to finish the REVDNS-query?

http://www.dnsstuff.com/tools/ptr.ch?ip=218.25.255.18


Question? 
If it's so, that a timeout in a REVDNS-query doesn't trigger the test, can
we change this, so that a timeout triggers the test? 
What if a query for a legit sender-IP times out?
Why a REVDNS-query can time out? Isn't so, that any reachable IP is assigned
to someone?

Markus


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