On Wed, 2008-03-26 at 11:14 -0400, Rodolfo Alcazar Portillo wrote: > Am Mittwoch, den 26.03.2008, 23:59 +0900 schrieb John Summerfield: > > I use postfix; I can do this: > > [root@xxxxxxxxxxxxx sysconfig]# tail /etc/postfix/header_checks > > /^Received.*UNITED.CO.UK/ REJECT No thanks > > /^Received.*HAPPYGROUP.CO.UK/ REJECT No thanks > > /^Received:.*ceres.concept.net.nz/ REJECT Bloody twits > > /^Received:.*dizinc.com/ REJECT No thanks > > /CentOS-announce Digest/ REJECT I don't want these > > /yourshopineu/ REJECT Bloody spammer > > Ok, the problem is that the content is really random... I tried to found > common words: Postfix has extensive features for dealing with these types of mail attacks including all kinds of rate limiting for number of connections from servers, blocking connections from servers with improper dns entries, calling various hooks to other spam control mechanisms. If a server connects and trys to send mail to non-existant users or other failure, this counts as an error. You can rate limit the number of errors allowed from a particular server attempting delivery, then postfix will just refuse connections from the server after the limit is exceeded. It is very efficient and deals exceptionally well with mail attacks. I suggest you check out http://www.postfix.org Nataraj > > http://www.padep.org.bo/log20080325/log/words4-sort_-_n > > thanks, anyway... > -- > Rodolfo Alcazar > Responsable red y datos > > Deutsche Gesellschaft für > Technische Zusammenarbeit (GTZ) GmbH > > Programa de Apoyo a la Gestión Pública Descentralizada y > Lucha Contra La Pobreza - PADEP > Av. Sánchez Lima 2226 > La Paz, Bolivia > > Tel: +591 22417628 (121) > Fax: +591 22417628 (126) > Web: www.padep.org.bo > Email: rodolfo.alcazar@xxxxxxxxxxxx >
