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Old 04-04-2002, 07:52 AM   #1
Syncrm
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Registered: Aug 2001
Location: Lansing, Michigan
Distribution: slackware8+
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sendmail + router


hello all...

i have what i hope is a fairly simple problem, but i'm just not able to solve it! here's the low-down: i have a network, consisting of 4 clients behind a router (slackware 8, 2.4.5 kernel, iptables + netfiltering) and i have sendmail running on a client which is running slack8 on the 2.4.17 kernel. i can receive mail fine through the router - as the router forwards all incoming requests to my sendmail client on port 25 - however, i can't send mail at all through pine or any other program. i'm sure it has something to do with my router, since when i send mail through the router, it reaches its destination just fine. is there anything i'm missing with iptables?

i appreciate any help you guys can offer. :-)
 
Old 04-10-2002, 01:25 AM   #2
Jon-
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Um...huh? I don't really understand the question? When you send mail through the router it works? You mean when you send mail using the router? Do you have a working available DNS servers for your clients?

Open up a shell prompt on one of the clients (preferably the mail server) and try to telnet to a public mail server on port 25. If it connects, then your mail server is broken for reasons 'probably' not related to your NAT ("router") box. I would guess possibly mail server configuration problem.
 
Old 04-10-2002, 11:27 AM   #3
Syncrm
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thanx for the response... i actually fixed the problem awhile ago. i just never bothered to post a response saying so since no one responded to the original message. :-)

of course, now i'm having a completely different problem.
 
Old 04-11-2002, 12:43 AM   #4
rgsenthilk
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Registered: Apr 2002
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Thumbs up Re: sendmail + router

Quote:
Originally posted by Syncrm
hello all...

i have what i hope is a fairly simple problem, but i'm just not able to solve it! here's the low-down: i have a network, consisting of 4 clients behind a router (slackware 8, 2.4.5 kernel, iptables + netfiltering) and i have sendmail running on a client which is running slack8 on the 2.4.17 kernel. i can receive mail fine through the router - as the router forwards all incoming requests to my sendmail client on port 25 - however, i can't send mail at all through pine or any other program. i'm sure it has something to do with my router, since when i send mail through the router, it reaches its destination just fine. is there anything i'm missing with iptables?

i appreciate any help you guys can offer. :-)
R.G.Senthil Kumar 200 blue rgsenthilk.com http://rgsenthilk.com
 
  


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