relays.osiriusoft.com is not a regular DNS query. They are scanned for each email to see whether the source email exists in the DNS.
> -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED]]On Behalf Of Tony Gray - > Network Administrator > Sent: Thursday, December 19, 2002 11:01 AM > To: [EMAIL PROTECTED] > Subject: RE: [Declude.JunkMail] relays.osiriusoft.com > > > > My only option to minimize hits on an external server will be direct > >resolution which slows down some other sites, or being able to become a > >secondary for relays.osirusoft.com. > > Your own server should NOT be noticably slower unless it is not configured > correctly. Without a forwarder to use, lookups could be slightly > slower at > first, but once you use it a bit, it will build a decent lookup cache of > it's own, then it should be faster than using any external site or > forwarder. From Scott's site, it appears that the osirusoft.com > sites have > a TTL of 43200, so once you do a lookup, all subsequent lookups for that > same IP should be served from your local cache (at least for the > next 43200 > seconds). > > If you are stuck on win32 platform, you'll need a fairly decent machine to > make up for the GUI, but a VERY inexpensive, high performance DNS resolver > can be built with FreeBSD/BIND on VERY modest hardware (steal your kids > p233, stuff some more RAM in it and go). Our fastest DNS server > is a 400Mhz > PII, slowest is a 200. > > We are running 16 IP4 based tests on each email right now. We > handle approx > 20,000 messages/day. Declude is pointed at a FreeBSD4.7/BIND8 > P400 Machine > for doing it's DNS test lookups. This machine's average processor use is > like 4%. It's hardly breaking a sweat. > > Unless you are generating some SERIOUS DNS traffic, IMO doing > zone transfers > is unnecessary extra work. > > - Tony > > > > > --- > [This E-mail was scanned for viruses by http://www.intouchmi.com] > > --- > [This E-mail was scanned for viruses by Declude Virus (http://www.declude.com)] --- This E-mail came from the Declude.JunkMail mailing list. To unsubscribe, just send an E-mail to [EMAIL PROTECTED], and type "unsubscribe Declude.JunkMail". The archives can be found at http://www.mail-archive.com. --- [This E-mail was scanned for viruses by Declude Virus (http://www.declude.com)] --- This E-mail came from the Declude.JunkMail mailing list. To unsubscribe, just send an E-mail to [EMAIL PROTECTED], and type "unsubscribe Declude.JunkMail". The archives can be found at http://www.mail-archive.com.
