I did not say the spammers would setup RDNS the ISPs will to avoid problems.
Kevin > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Bruce Barnes > Sent: Friday, December 16, 2005 7:19 PM > To: [email protected] > Subject: RE: [IMail Forum] Reverse-DNS-Check > > > If spammers setup RDNS, then they can be more effectively > prosecuted under existing laws, something that's already > beginning to happen. > > Bruce Barnes > ________________________________ > > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Kevin Bilbee > Sent: Friday, December 16, 2005 21:04 > To: [email protected] > Subject: RE: [IMail Forum] Reverse-DNS-Check > > Then spammer ISP's will setup RDNS for all ip addresses, > which most already do! > > Kevin Bilbee > > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of > Matrosity Hosting > Sent: Friday, December 16, 2005 6:47 PM > To: [email protected] > Subject: Re: [IMail Forum] Reverse-DNS-Check > > > What would happen if everyone refused mail on this test? > > Bruce Barnes wrote: > > While it may not be good as a single test, > remember that AOL bounces ALL > messages without reverse DNS. > > When one of our bandwidth providers screwed up > our reverse DNS allocation, > AOL immediately stopped accepting all e-mail > from us because our > IN-ADDR.ARPA records were no longer available. > Once we got the bandwidth > provider to re-allocate our REVERSE DNS, AOL > immediately started to accept > our messages again. > > For more information on , see: > http://postmaster.aol.com/guidelines/standards.html. > > While AOL's connection message, sent to the > mail server as mail transmission > to AOL is negotiated states: "America Online > (AOL) and its affiliated > companies do not authorize the use of its > proprietary computers and computer > networks to accept, transmit, or distribute unsolicited > bulk e-mail sent > from the internet. Effective immediately: AOL may no > longer accept > connections from IP addresses which have no > reverse-DNS (PTR > record) > assigned." > > The link > http://postmaster.aol.com/guidelines/standards.html, in line 4 of > the served page, now clearly states: "AOL's mail servers > will reject > connections from any IP address that does not > have reverse DNS (a PTR > record)." > > Considering that one post I saw stated that AOL was > rejecting something like > eight billion messages per day (please don't > attack the quoted number as it > may or may not be accurate), based on no > reverse DNS entry, that pretty much > makes it a "de-facto standard" If they are > doing it, then it's going to be > pretty hard for others to ignore it. > > Once we implemented immediate rejection for no > reverse DNS entry - two years > ago now, we saw our spam drop by almost 50% and > have not had one single > complaint since doing so. Remember, too, that > for anyone to have a reverse > DNS entry also requires allocation of the > subnet you are using to the > primary domain name of your mail server. It > CAN be done. Sometimes it > takes some work, but it CAN be done. There are several > posts in the archive > about this very issue. > > Bruce Barnes > ChicagoNetTech Inc > > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On > Behalf Of John T (Lists) > Sent: Friday, December 16, 2005 19:33 > To: [email protected] > Subject: RE: [IMail Forum] Reverse-DNS-Check > > It is a good test as part of a weighting system. > > However, to take action on one test is not so wise. > > John T > eServices For You > > > > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:IMail_Forum- > [EMAIL PROTECTED] On Behalf Of Martin > Schaible > Sent: Friday, December 16, 2005 5:16 PM > To: Ipswitch IMail Mailing List > Subject: [IMail Forum] Reverse-DNS-Check > > Hi, > > We do not use the reverse dns check for a spam > check. I'm not sure, if > the > > > time is > > > right to switch it on. In earlier days, > this check > was to dangerous. > > Do you use the reverse dns check? > > -- > > Mit freundlichen Grüssen > > -------------------------------------------- > Merlin Consulting > Martin Schaible > Bahnhofstrasse 27 > CH-8702 Zollikon > > Phone: +41 44 391 30 00 > Fax: +41 44 391 32 49 > > Mail: mailto:[EMAIL PROTECTED] > URL: http://www.merlinconsulting.ch > Support: http://support.merlinconsulting.ch > > GPS: N47 20.235 E8 34.226 > -------------------------------------------- > News - Neue Produkte: > > .:. NOD32 Antivirus System > .:. BlueDragon > .:. Kiwi Syslog Monitor > .:. Paessler GmbH > .:. Sawmill Loganalyzer > .:. SmarterTools > -------------------------------------------- > > > To Unsubscribe: > http://www.ipswitch.com/support/mailing-lists.html > List Archive: > > http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ > Knowledge Base/FAQ: > http://www.ipswitch.com/support/IMail/ > > > > > To Unsubscribe: > http://www.ipswitch.com/support/mailing-lists.html > List Archive: > http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ > Knowledge Base/FAQ: > http://www.ipswitch.com/support/IMail/ > > > To Unsubscribe: > http://www.ipswitch.com/support/mailing-lists.html > List Archive: > http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ > Knowledge Base/FAQ: > http://www.ipswitch.com/support/IMail/ > > > > > > > To Unsubscribe: http://www.ipswitch.com/support/mailing-lists.html > List Archive: > http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ > Knowledge Base/FAQ: http://www.ipswitch.com/support/IMail/ > To Unsubscribe: http://www.ipswitch.com/support/mailing-lists.html List Archive: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ Knowledge Base/FAQ: http://www.ipswitch.com/support/IMail/
