I guess I was not clear. I do not use AT&T (for anything) but we have seen the load increase so much on our own name servers that we are adding more. I only use AT&T as a reference point - they must have decided the load was too much to take such drastic action. Many desktop Spam filters are now incorporating blacklist lookups. It is one thing to have mail servers and gateways doing lookups but if end users start doing them it is only going to increase the congestion. The timeouts are from the blacklists not our name servers.
I think this is going to be a bigger problem as time goes. We are probably going to do zone transfers on as many of the blacklists as possible and make our own nameservers authoritative for those zones within our network. Maybe I am the only one that sees this as an issue. Chuck Schick Warp 8, Inc. 303-421-5140 www.warp8.com > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] Behalf Of Jason > Sent: Thursday, April 22, 2004 10:28 AM > To: [EMAIL PROTECTED] > Subject: RE: [Declude.JunkMail] Nameserver issues and Spam fighting > > > Chuck, > > Your most efficient option would be to run your own DNS server. Then > YOU control the query volumes, and no longer rely on AT&T. > > Jason > > > > > > > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Chuck Schick > Sent: Thursday, April 22, 2004 11:16 AM > To: Declude. JunkMail > Subject: [Declude.JunkMail] Nameserver issues and Spam fighting > > > With the increase in people trying to fight spam, nameservers are > getting bombarded with lookup request. Recently I understand that AT&T > has taken steps to not allow lookups of most of the blacklists using > their network. It seems that we are seeing more and more DNS timeouts > which result in more spam getting through. Anyone else perceive this as > a problem that will only get worse? Anyone have any suggestions to make > the DNS lookup process more efficient? > > It would be nice feature if we could bypass some of the DNS lookups if > the email scored over a certain amount which would allow some of the > email to bypass the lookups thereby reducing the load. > > [AUTOMATED NOTE: Your mail server [66.140.194.140] is missing a > reverse DNS entry. All Internet hosts are required to have a > reverse DNS entry. The missing reverse DNS entry will cause your > mail to be treated as spam on some servers, such as AOL.] > > --- > [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.
