From owner-freebsd-questions Sat Dec 29 14: 5:56 2001 Delivered-To: freebsd-questions@freebsd.org Received: from java2.dpcsys.com (java2.dpcsys.com [206.16.184.5]) by hub.freebsd.org (Postfix) with ESMTP id 8A5A037B419 for ; Sat, 29 Dec 2001 14:05:46 -0800 (PST) Received: from localhost (localhost [127.0.0.1]) by java2.dpcsys.com (8.11.1/8.11.1) with ESMTP id fBTM5TD43162; Sat, 29 Dec 2001 14:05:29 -0800 (PST) Date: Sat, 29 Dec 2001 14:05:29 -0800 (PST) From: Dan Busarow To: "F.Xavier Noria" Cc: freebsd-questions@FreeBSD.ORG Subject: Re: Error from sendmail In-Reply-To: <20011229213832.2d9240b8.fxn@retemail.es> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG On Dec 29, F.Xavier Noria wrote: > On Sat, 29 Dec 2001 13:12:35 +0100 > Cliff Sarginson wrote: > > : On Sat, Dec 29, 2001 at 10:33:30AM +0100, F. Xavier Noria wrote: > : > I've found a console filled with messages like this one: > : > > : > Dec 29 10:21:08 conway sendamil[7618]: fTB9JlK07618: > : rule_set=check_mail,> arg_1 = , relay = localhost > : [127.0.0.1], reject=451 4.1.8> Domain of sender address biz@6x6.net > : does not resolve> > [...] > I think I cannot understand what is happenning because I really don't > understand the role of sendmail in my system. Let me ask these basic > questions: > > This is my computer at home, with just one real user and a dial-up > connection. I use the SMTP server of my ISP to send outgoing mail, and > download incoming mail from some POP3 servers with fetchmail. Whith this > settings, where does sendmail intervene? Is sendmail used here just to > deliver local mail (messages to root and so) and by the command line In your situation sendmail is not needed at all. You should disable it in /etc/rc.conf (sendmail_enable="NO") > client "mail"? If I was right, how could sendmail be dealing with a > message from [or to, I don't know] biz@6x6.net? Your computer must have been connected to the Internet and some spammer running a port scanner found your sendmail. He's probably trying every possible user name and that's why you see so many messages. Dan -- Dan Busarow 949 443 4172 Dana Point Communications, Inc. dan@dpcsys.com Dana Point, California 83 09 EF 59 E0 11 89 B4 8D 09 DB FD E1 DD 0C 82 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message