(RADIATOR) Telnet, SMTP and port 25

[Hugh Irvine]

Hello Tunde -

The error message clearly states "No route to host".

Try a traceroute to see what is amiss.

regards

Hugh


On Wednesday, August 21, 2002, at 06:12 PM, Ayotunde Itayemi wrote:

> Hi Hugh, Hi all,
>  
> Okay this is not a RADIUS question, but excuse me anyway.
>  
> I have a RedHat 6.2 Linux system that has been configured as a mail 
> server
> for a real Internet domain. Users can receive their mails but nothing 
> (mails) can be sent out.
>  
> After a lot of troubleshooting I made out the following:
>  
> 1. The system can't send mails out because you cannot initiate a telnet 
> session from it
>     to any other system on port 25 e.g.,
>  
> [root at mail itayemi]# telnet 10.0.4.4 25
> Trying 10.0.4.4...
> telnet: Unable to connect to remote host: No route to host
>  
> This is the same message that keeps being written to the mail log 
> (/var/log/maillog)
> by sendmail. Any ideas?
>  
> You can telnet to it on port 25 from other systems.
>  
> I have looked at all the common causes I can think of (DNS, inetd, 
> routing, sendmail etc)
> Nothing seems to work. The system is not configured as a firewall and 
> the port is not blocked
> by the router or any other device.
>  
> Regards,
> Tunde I.
>  
>  
>

NB: I am travelling this week, so there may be delays in our 
correspondence.

--
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anywhere. Available on *NIX, *BSD, Windows 95/98/2000, NT, MacOS X.
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