From owner-freebsd-questions Thu May 28 15:03:54 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id PAA06737 for freebsd-questions-outgoing; Thu, 28 May 1998 15:03:54 -0700 (PDT) (envelope-from owner-freebsd-questions@FreeBSD.ORG) Received: from darla.swimsuit.internet.dk (pm25-17.image.dk [194.234.59.17]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id PAA06611 for ; Thu, 28 May 1998 15:03:20 -0700 (PDT) (envelope-from leifn@internet.dk) Received: from darla.swimsuit.internet.dk (darla.swimsuit.internet.dk. [192.168.0.10]) by darla.swimsuit.internet.dk (8.8.8/8.8.8) with SMTP id AAA13071; Fri, 29 May 1998 00:03:05 +0200 (CEST) (envelope-from leifn@internet.dk) Date: Fri, 29 May 1998 00:03:04 +0200 (CEST) From: Leif Neland Reply-To: leifn@internet.dk To: vagner cc: questions@FreeBSD.ORG Subject: Re: sendmail antispam In-Reply-To: <35665D44.746B@spdc.ti.com> 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 On Sat, 23 May 1998, vagner wrote: > I have this rule set in sendmail.cf but i would like to > also check for valid username@their.domain instead of just the > domain name.I checked the sendmail site for a rule but am at a > loss. > > anyone know how to do this? You can't. The host in question might not be online at the moment. For instance, many systems call in at regular intervals to pick up mail at the machines at work. And even if the system is online, it might not want to tell you if a username is ok before you try to deliver. Or the system you deliver to might just be the outside of a firewall, which happily accepts mail to any username inside, and passes it on to the real, unreachable mailserver inside. Leif Neland leifn@internet.dk To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message