John Hinton schrieb: >> On Wed, 2006-09-20 at 05:12, abhishek singh wrote: >> >> >>> yes i am using SMTP Authentication , but when i m >>> doing telnet to my server on 25 port so i am able to >>> send mail by unknow user that in in not my mail server >>> like >> >> [ snip ] > > Do you have telnet open to the outside world? If so kill it and only > allow ssh with the proper extra security setup. You may need to open > telnet for a little while for testing purposes, but don't leave it > that way. What has using the telnet client for testing a daemon on a tcp port to do with running a telnet daemon? Answer: nothing. > John Hinton Alexander