Date: Thu, 19 Jun 2003 15:36:32 +0200 From: Andreas =?iso-8859-1?Q?Wider=F8e?= Andersen <awand@pragma.no> To: Fernando Gleiser <fgleiser@cactus.fi.uba.ar> Cc: freebsd-questions@FreeBSD.ORG Subject: Spamassassin question [was Re: Do I have an open relay?] Message-ID: <5.2.0.9.0.20030619150558.029c9888@mail.pragma.no> In-Reply-To: <20030619094727.W61487-100000@cactus.fi.uba.ar> References: <5.2.0.9.0.20030619141344.02971008@mail.pragma.no>
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At 09:50 19.06.2003 -0300, Fernando Gleiser wrote: >On Thu, 19 Jun 2003, Andreas Wider=F8e Andersen wrote: > > > Hi, > > I'm a bit nervous here. Recently I've started getting 20-25 mails to my > > Postmaster account on my FreeBSD 4.8RC server running Sendmail > > 8.12.8/8.12.8 each day with a message to Postmaster that the mail could= not > > be delivered. > >Sendmail by default does not relay, unless you enable PROMICUOUS_RELAY. >To test if you have an open relay, go to: http://www.abuse.net/relay.html >and run a test against your server. > >It may be a "rumplestinkin attack", the spammers are trying to guess >account names in your server, postmaster gets a copy of the bounce. Look >at the logs for the full info. Thanks! All tests performed, no relays accepted. My access file only contains a=20 list of domains I reject: ## $FreeBSD $ ## ## Mail relay access control list. Default is to reject mail unless the ## destination is local, or listed in /etc/mail/sendmail.cw ## #cyberspammer.com 550 We don't accept mail from spammers #FREE.STEALTH.MAILER@ 550 We don't accept mail from spammers #another.source.of.spam REJECT #okay.cyberspammer.com OK #128.32 RELAY bossgame.com 550 We don't accept mail from spammers intellectualfantasy.com 550 We don't accept mail from spammers ... and so on... Will Spamassassin only work on mails that are delivered to account on the=20 server it runs (locally), or can it also work for mailinglists in Ie.=20 /etc/mail/aliases that are being forward to other mailaccounts around the=20 globe? /Andreas --- Andreas Wider=F8e Andersen <awand@pragma.no> Pragma AS http://www.pragma.no=20
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