From owner-freebsd-questions Thu May 18 7:42:38 2000 Delivered-To: freebsd-questions@freebsd.org Received: from dspsoft.com (dhcp9571059.columbus.rr.com [24.95.71.59]) by hub.freebsd.org (Postfix) with SMTP id 271C737B602 for ; Thu, 18 May 2000 07:41:44 -0700 (PDT) (envelope-from satya@devireddy.com) Received: (qmail 1830 invoked by uid 1000); 18 May 2000 14:41:42 -0000 Received: from localhost (sendmail-bs@127.0.0.1) by localhost with SMTP; 18 May 2000 14:41:42 -0000 Date: Thu, 18 May 2000 10:41:42 -0400 (EDT) From: Satya Devireddy X-Sender: satya@daffy.dspsoft.com To: Chuck Barnett Cc: "'questions@freebsd.org'" Subject: Re: ipfw rc.firewall In-Reply-To: Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG From your subject line I assume you are trying to setup a firewall ? If you setup a firewall and block SMTP port, then no one can connect to it. So, you will not receive email from the outside to your box. I think you are trying to plug the "Open Mail Relay" in your email server. If so depending on which email server you are using, you need to configure that to accept email only to local domains (and not relay). I am not sure what the default email server is in bsd now sendmail or postfix. You need to check the documentation of the correct one. I use qmail for which configuration is different. Just because someone can telnet to SMTP port does not mean that it is open. The email server should look at the addresses and reject the ones that do not belong to your domain(s). hope this helps, -Satya On Thu, 18 May 2000, Chuck Barnett wrote: > Hello, I have a problem. My email server is "open" you can telnet to port > 25 and send email from whom ever. How do I tell my computer not to accecpt > connections over port 25 for sending messages. > > chuck To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message