Date: Tue, 22 Jan 2002 09:20:37 -0800 From: "Jeremy A. Mates" <jmates@sial.org> To: freebsd-security@freebsd.org Subject: Re: relaying mail from DHCP clients Message-ID: <20020122172037.GA77721@darkness.sial.org> In-Reply-To: <20020122111816.5e70b6ff.resopmok@gramsc1.dyndns.org> References: <20020122101115.P25912-100000@camelia.dnt.ro> <002701c1a328$9aac7fa0$2e020a0a@mti.itb.ac.id> <20020122112913.N58243@heresy.dreamflow.nl> <20020122111816.5e70b6ff.resopmok@gramsc1.dyndns.org>
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* Chris Thomas <resopmok@gramsc1.dyndns.org> [2002-01-22 08:19-0800]: > it is wise to only allow clients from inside your LAN to relay mail, > preventing your server from being used as a relay by spammers (note > that you can specify an IP range in /etc/mail/access). open mail > relays are a problem, and they can get you blacklisted fairly easily > (www.ordb.org). pop3 authentication is a viable solution, but can be > somewhat difficult to ipmlement with sendmail. Or, you can use SMTP AUTH (and/or STARTTLS) if pop-before-smtp does not appeal to you: http://www.sial.org/talks/smtpauth-starttls/ -- Jeremy Mates http://www.sial.org/ OpenPGP: 0x11C3D628 (4357 1D47 FF78 24BB 0FBF 7AA8 A846 9F86 11C3 D628) To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-security" in the body of the message
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