Ralph Shumaker wrote: > Paul G. Allen wrote: >> Ralph Shumaker wrote: >>> Paul G. Allen wrote: >>>> Use telnet from the command line to see if anything is listening on >>>> the suspected ports. >>> >>> $ telnet localhost 0 >>> Trying 127.0.0.1... >>> telnet: connect to address 127.0.0.1: Connection refused >>> . >>> . >>> . >>> $ telnet localhost 24 >>> Trying 127.0.0.1... >>> telnet: connect to address 127.0.0.1: Connection refused >>> $ telnet localhost 25 >>> Trying 127.0.0.1... >>> Connected to localhost. >>> Escape character is '^]'. >>> 220 myComputerIPv4.dslextreme.com ESMTP Sendmail 8.14.1/8.14.1; Thu, >>> 21 Feb 2008 18:34:08 -0800 >>> >>> Do I need sendmail? Is that something that is necessary for >>> Thunderbird? Or is this something that allows me to operate an email >>> server? >>> >>> By the way, how do I break the connection between telnet and port >>> 25? My command prompt hasn't returned. ^C, ^D, ^Z don't work. I >>> could just close the VT, but I don't want a telnet zombie. >>> >> >> Sendmail, when on a workstation, etc. that is not running a mail >> server, is used for sending mail to local accounts for things such as >> cron jobs and Logwatch. > > So basically, yes, I need sendmail on my system. > >> >> Once connected to sendmail, you can disconnect with the SMTP command >> QUIT. You can also use it to send mail, if you know the protocol >> (which is easily referenced from many web sites). > > But you have to know SMTP stuff. Hmmm. > >> >> Also, <CTRL+]> would have broken the connection (the '^]' means to >> type the control character ']'). >> >> PGA > > Hmmm. All the things I didn't even know I didn't know.
Hanging around here eventually gets those unknown unknowns converted to known unknowns, no? The known known result costs a little more. :-) ..j -- [email protected] http://www.kernel-panic.org/cgi-bin/mailman/listinfo/kplug-list
