[lug] SMTP delivery: No route to host

[Dan Cox]

I'm really new to the whole routing table thing so take anything I say
with a grain of salt. It looks like you may need to add a route pointing
to 206.247.117.72 (route add -net 206.247.117.0 gw 192.168.1.1) on the
host and something similar on the router. I don't know the physical
layout of your network, but if your router is the default route for your
hosts and your router doesn't know about the 206.247.117.0 network then
any traffic heading for it will go out to the internet. You say other
people are able to use the email server, where are they located
(internet, local, but different network). Can you access other ports on
the 206.247.117.72? Is the 206.247.117.72 physically connected to the
router? Sorry for so many questions, I'm really just winging it. Hope
it's helpful.

Dan Cox

On Sun, 2002-11-24 at 01:38, Justin-lists wrote:
> Firewall routing table:
> [glowecon at naz glowecon]$ netstat -rn
> Kernel IP routing table
> Destination     Gateway         Genmask         Flags   MSS Window  irtt Iface
> 66.252.192.227  0.0.0.0         255.255.255.255 UH       40 0          0 ppp0
> 192.168.1.0     0.0.0.0         255.255.255.0   U        40 0          0 eth1
> 127.0.0.0       0.0.0.0         255.0.0.0       U        40 0          0 lo
> 0.0.0.0         66.252.192.227  0.0.0.0         UG       40 0          0 ppp0
> 
> Client machien routing table:
> [glow at sirius glow]$ netstat -rn
> Kernel IP routing table
> Destination     Gateway         Genmask         Flags   MSS Window  irtt Iface
> 192.168.1.0     0.0.0.0         255.255.255.0   U        40 0          0 eth0
> 127.0.0.0       0.0.0.0         255.0.0.0       U        40 0          0 lo
> 0.0.0.0         192.168.1.1     0.0.0.0         UG       40 0          0 eth0
> 
> The server is my own. I know smtp works fine on the server because I have many
> other users that use it. It has to be a problem w/ my local boxes or the route
> it's taking to get there. But I don't understand why it's *only* happening for
> port 25.
> 
> Justin
> --
> glow at jackmoves.com
> 
> 
> ---------- Original Message -----------
> From: Dan Cox <dancox at teleport.com>
> To: lug at lug.boulder.co.us
> Sent: 23 Nov 2002 20:07:25 -0700
> Subject: Re: [lug] SMTP delivery: No route to host
> 
> > What does the routing table look like on the firewall and on the host
> > your sending mail from (netstat -rn)? Off the top of my head this looks
> > like your firewall or the host doesn't know the route to the smtp
> > server. Might be a default route thing.Is the 206.247.117.72 host 
> > your server or your ISPs server?
> > 
> > Dan Cox
> > 
> 
> > 
> > _______________________________________________
> > Web Page:  http://lug.boulder.co.us
> > Mailing List: http://lists.lug.boulder.co.us/mailman/listinfo/lug
> > Join us on IRC: lug.boulder.co.us port=6667 channel=#colug
> ------- End of Original Message -------
> 
> _______________________________________________
> Web Page:  http://lug.boulder.co.us
> Mailing List: http://lists.lug.boulder.co.us/mailman/listinfo/lug
> Join us on IRC: lug.boulder.co.us port=6667 channel=#colug