From owner-freebsd-questions Tue Jun 6 13:17:39 2000 Delivered-To: freebsd-questions@freebsd.org Received: from alpha.root-servers.ch (alpha.root-servers.ch [195.49.62.125]) by hub.freebsd.org (Postfix) with SMTP id CB84A37B81B for ; Tue, 6 Jun 2000 13:17:32 -0700 (PDT) (envelope-from gabriel_ambuehl@buz.ch) Received: (qmail 26446 invoked from network); 6 Jun 2000 20:19:15 -0000 Received: from client99-59.hispeed.ch (62.2.99.59) by ns1.root-servers.ch with SMTP; 6 Jun 2000 20:19:15 -0000 Date: Tue, 6 Jun 2000 22:19:06 +0200 From: Gabriel Ambuehl X-Mailer: The Bat! (1.42) Business Organization: BUZ Internet Services X-Priority: 3 (Normal) Message-ID: <147471762338.20000606221906@buz.ch> To: "James A. Mutter" Cc: keith@mail.telestream.com, questions@FreeBSD.ORG Subject: Re[2]: Spoofed mail In-reply-To: References: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG Hello James, > POP Before SMTP is a good way to do this. Force the users to comlete a > valid POP transaction before accepting mail from that host. Sendmail, > Postfix, and I'm guessing QMail all support this, with varying degrees > of difficulty. ACK. We use this here with great success (qmail + vpopmail environment). I can only recommend it especially if you do webhosting. With dialup clients, the problem isn't that big as they're IPs are always in your own nets... Best regards, Gabriel To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message