Date: Tue, 19 Sep 2000 23:30:46 -0600 From: Colin Faber <cfaber@fpsn.net> To: Evren Yurtesen <yurtesen@ispro.net.tr> Cc: "Chutima S." <chutima_s@zdnetonebox.com>, freebsd-security@FreeBSD.ORG Subject: Re: How to prevent relaying host. Message-ID: <39C84B86.77CC382B@fpsn.net> References: <Pine.BSF.4.21.0009200820010.82825-100000@finland.ispro.net.tr>
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Really the only way to allow any users with out limits for relaying is to have FEATURE(promiscuous_relay) in your m4 file, By default freebsd 3.4 should ban traffic to any outward domain if the sender isn't localhost. Check your config, for 3.4 I believe you can find the default under /usr/src/etc/sendmail/freebsd.mc Evren Yurtesen wrote: > > Are you sure you receive this email and your users are not sending > them? Because I think the sendmail.cf in FreeBSD automatically blocks > relaying as default by starting at version 3.1 I guess. > how does your users send mail? they > login to the machine and send or via smtp remotely? > As it comes to m4 configuration I found it easy to go to > /usr/src/contrib/sendmail/cf/cf and then fallow the instructions on > sendmails web page (if you installed sources you can have this directory) > there are also some sample configurations in there. > Evren > > > On Tue, 19 Sep 2000, Chutima S. wrote: > > > Dear all > > > > I found that my host running FreeBSD 3.4 with sendmail version 8.9.3 > > have receive mail from strange people and target is not our users hundreds > > messages a day. Is it was relay host for some spam site? How can I > > reject those mail? > > > > I already visited www.sendmail.org and read about relaying host but I > > don't understand M4 config, I know only I use /etc/sendmail.cf to config > > my sendmail process. And /etc/mail contains only 2 file Makefile and > > README. > > > > Thanks in advance, > > Chutima Subsirin > > chutima_s@zdnetonebox.com - email > > > > > > ___________________________________________________________________ > > To get your own FREE ZDNet Onebox - FREE voicemail, email, and fax, > > all in one place - sign up today at http://www.zdnetonebox.com > > > > > > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > > with "unsubscribe freebsd-security" in the body of the message > > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-security" in the body of the message To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-security" in the body of the message
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