DNS requests
Printed From: LogSat Software
Category: Spam Filter ISP
Forum Name: Spam Filter ISP Support
Forum Description: General support for Spam Filter ISP
URL: https://www.logsat.com/spamfilter/forums/forum_posts.asp?TID=5780
Printed Date: 04 November 2025 at 2:00am
Topic: DNS requests
Posted By: mikek
Subject: DNS requests
Date Posted: 01 September 2006 at 9:33am
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Does SF cache the DNS replies it gets? If not, would it be advisable to install a (cache-only) dns server on the same machine as SF to cut down on network traffic?
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Replies:
Posted By: LogSat
Date Posted: 01 September 2006 at 10:03am
SpamFilter does not cache DNS replies. However...
If an IP address is sending spam, after a few emails get caught within a short period of time, the IP will be added to a temporary local IP blacklist cache (if this filter is enabled), and any further connections will be immediately rejected.
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Roberto Franceschetti
http://www.logsat.com" rel="nofollow - LogSat Software
http://www.logsat.com/sfi-spam-filter.asp" rel="nofollow - Spam Filter ISP
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Posted By: mikek
Date Posted: 01 September 2006 at 10:40am
Yes I'm aware of that function...
So you would say installing a cache-only dns server on the machine would help?
A ham message goes through a lot of tests - and quite a few of them are DNS based, so I would expect a cut down of external DNS requests...
What do you think? Should I try?
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