Date: Sat, 29 Dec 2001 14:05:29 -0800 (PST) From: Dan Busarow <dan@dpcsys.com> To: "F.Xavier Noria" <fxn@retemail.es> Cc: freebsd-questions@FreeBSD.ORG Subject: Re: Error from sendmail Message-ID: <Pine.BSF.4.21.0112291401370.39424-100000@java2.dpcsys.com> In-Reply-To: <20011229213832.2d9240b8.fxn@retemail.es>
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On Dec 29, F.Xavier Noria wrote: > On Sat, 29 Dec 2001 13:12:35 +0100 > Cliff Sarginson <cliff@raggedclown.net> 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 = <biz@6x6.net>, 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
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