Telnet & smtp

[Jeffrey Goldberg]

On Sep 16, 2007, at 11:55 AM, Bill Banks wrote:

> I cant do  telnet sarah.ourweb.net 25

It appears that sarah.ourweb.net, 216.236.255.132, isn't listening on  
port 25.  Hold on, let me do a more complete scan.  (If you get  
indications of a scan from 72.64.112/29 please don't treat is as abuse).

You are running telnetd, but that only listens on port 23.  If you  
want to listen on port 25 you need to be running a mailserver.  Have  
you configured or enabled sendmail (or some other MTA) to listen for  
mail from the outside world?  What makes you believe that your system  
should be listening for SMTP traffic.

As an aside, since you are already running sshd, there really is no  
need to run telnetd.  I would recommend turning that off if there  
isn't a compelling need to run it.

-j


-- 
Jeffrey Goldberg                        http://www.goldmark.org/jeff/