On Fri, Mar 15, 2002 at 06:37:54PM +0100, Nico Puhlmann wrote:
hi,
how can I turn off the "feature", that anybody can telnet to my smtp-port? Are there any special progs necessary or is the PrivacyOption goaway or similar enough? How do you handle that?
yes, if you deactivate your smtp service - it's possible. otherwise not. if you want have anyone to connect to your smtp service you can connect with telnet. but if you have a static ip you can setup some iptable rules, to allow only connections from your ip for example.
If you are using sendmail and you do not want anyone outside the localhost to be able to send mail to sendmail you can add the following to sendmail.cf O DaemonPortOptions=Addr=localhost,Name=MTA If you turn sendmail completely off then fetchmail stops working because it dumps recieved mail into port 25. Becareful, unless you tell it not to yast likes to re-write sendmail.cf, wiping out your changes. -- Paul Elliott 1(512)837-1096 pelliott@io.com PMB 181, 11900 Metric Blvd Suite J http://www.io.com/~pelliott/pme/ Austin TX 78758-3117