On Sat, Jan 11, 2003 at 04:03:26PM +0200, Taymour A. El Erian wrote: > I can't understand the feature badmailfrom-unknown, does it mean it won't accept > any messages from any server/sender without PTR ?
it's based on a simple observation. many spam mails have two things in common: -they us a sender adress from a big freemail system -they are send from hosts without reverse DNS. thus, you add the big freemailers to the badmailfrom-unknown file and get rid of some spam. this was initially done by maex for qmail, I ported it to qmail-ldap and Claudoi was so kind to integrate it. my badmail-from unknown file is basically what maex already uses and publishes: @21cn.com @aol.com @arabia.com @asia.yahoo.com @atozasia.com @au.ru @axn-asia.com @balitribune.com @bellsouth.com @bellsouth.net @bigfoot.com @bigpond.com.au @climaxmail.com @cmmail.com @com.ne.kr @compaq.com @connector.dk @cranfield.ac.uk @cswebmail.com @desertmail.com @dillingen.baynet.de @dreamvacationgiveaways.com @dreamwiz.com @earthlink.com @earthlink.net @email.com @email.cz @esperanto.nu @eudoramail.com @excite.com @exite.com @female.ru @flashmail.com @forum.dk @freemail.com.au @freemail.com.pk @freemail.hu @go.com @go.ru @hanimail.com @hanimail.net @hanmail.com @hanmail.net @home.com @hotmail.com @hotpop.com @iobox.fi @jippii.fi @joymail.com @juno.com @k.ro @koreainsights.com @latinmail.com @lycos.com @mail-online.dk @mail.com @mail.ru @mailcity.com @mails.ch @mash4077.com @mecom.net @megamail.pt @moscowoffice.com @msn.com @myrealbox.com @nerv.ne.jp @netscape.net @newmail.ru @ofir.dk @personal.ro @phreaker.net @post.cz @prodigy.net @prodigy.net.mx @prontomail.com @returnedaddress.com @runbox.com @seekercenter.net @sex.nl @snoopymail.com @spaceage24.com @subdimension.com @tecnoradio.it @telkom.net @themail.com @uboot.com @usa.net @usahelp.com @usgcl.com @usgcl.org @vbi.fi @x263.net @yahoo.ca @yahoo.co.nz @yahoo.com @yahoo.com.ar @yahoo.com.kr @yahoo.com.sg @yahoo.com.tw @yahoo.de @yahoo.no @yahoo123.com @yourwap.com
