Hi Bernd. Other MTA have the same option. I am just adding something I miss in courier. . Exim do that by host_reject_connection option. . Postfix by smtpd_client_restrictions option
I use to block some dsl and dial-up hosts but its not the only use. Marcus ----- Original Message ----- From: "Bernd Plagge" <bpla...@choicenet.ne.jp> To: <courier-users@lists.sourceforge.net> Sent: Monday, April 27, 2009 11:32 PM Subject: [courier-users] badhost patch > Hello, > > no offense intended but this approach will make you reject valid mails. > For one, your basic assumption is that any mail originating from a > hostname including dial/adsl/dsl is just spam. This doesn't hold true in > times where lines are becoming faster and companies are running their own > mail server from a DSL connection. > Just to give you an idea. Here in Japan fibre optics 100 Mbit lines are > very common and one provider started to offer a 1 Gigbit line for a very > affordable monthly flat rate. > > Regards, > Bernd > > > On Tue, 28 Apr 2009 01:47:33 +0000 > courier-users-requ...@lists.sourceforge.net wrote: > >> From: "Marcus Pereira" <mar...@task.net.br> >> To: courier-users@lists.sourceforge.net >> Subject: [courier-users] badhost patch >> Date: Mon, 27 Apr 2009 16:44:56 -0300 >> >> Hello. >> >> Some years ago I missed a function on Courier bofh file. It was to reject >> connections based on the reverse dns host name. >> I made a patch and I use it for arround 4 years with no problems. >> I use mostly to block direct delivery from adsl/dial-up connections. >> >> The bofh lines look like this: >> >> badhost adsl.giga.net.tw >> badhost broadband.ntl.com >> badhost cable.primacom.net >> badhost dial-in.ttnet.net.tr >> badhost dial-up.arnes.si >> badhost dyn.user.ono.com >> badhost dsl.amrltx.swbell.net >> >> And courier will block with messages like this: >> >> 517 Host rejected: 217.217.64.81.dyn.user.ono.com >> >> Blocking hostnames and not IP networks is much more easy to mantain. I >> hope >> this helps anyone who missed that feature too. >> ------------------------------------------------------------------------------ Register Now & Save for Velocity, the Web Performance & Operations Conference from O'Reilly Media. Velocity features a full day of expert-led, hands-on workshops and two days of sessions from industry leaders in dedicated Performance & Operations tracks. Use code vel09scf and Save an extra 15% before 5/3. http://p.sf.net/sfu/velocityconf _______________________________________________ courier-users mailing list courier-users@lists.sourceforge.net Unsubscribe: https://lists.sourceforge.net/lists/listinfo/courier-users
