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client software that will do SMTP at port 2525  RSS feed

 
paul wheaton
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I work at an office with a screwed up firewall. It blocks outgoing access to all of the lower ports with a few exceptions. One of the blocked ports is 25 (SMTP).
I set my home server up to do SMTP at port 2525 so I can get around this stupid limitation. But my netscape mail program won't work on ports other than 25.
Is there a way to reroute an outgoing port 25 packet to 2525, or is there a mail program that will use alternate ports?
(yes, this has no Java stuff, but I'm not sure where else I could ask this question)
 
Frank Carver
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What I did in a similar situation was to run a little program on a box inside the firewall (eg. my desktop PC) which accepted input on one port (eg. 25), and connected it to another port on another machine (eg. yourmachine:2525. Then set Netscape (or whatever) to connect to localhost as the SMTP host.
This is a handy technique for all sorts of uses.
I used a Java program called TCP Reflector which I found on the web. Or you could write your own.
See this does have something to do with Java after all!

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Frank Carver
[ Personal: frank@efsol.com http://www.efsol.com/ ]
[ At Work: frank.carver@bt.com tel +44 (0)1473 227371 ]


[This message has been edited by Frank Carver (edited March 30, 1999).]
 
Frank Carver
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Or, as an alternative, have you tried just putting "yourhost:2525" in the SMTP server box in Netscape's configuration screen. It works for me with Netscape 3.01
Just making sure you've tried it...
Frank.
 
paul wheaton
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On my network at home, I have a gateway at 192.168.1.1. Using Netscape 4.5, I can send mail to "192.168.1.1", no prob, and I can send mail to "192.168.1.1:25" no prob. On my linux box (192.168.1.7) I set up SMTP at 2525. The gateway has a passthru at 2525 to the linux box. If I telnet to 192.168.1.7:2525 I see the SMTP stuff. But when I tell Netscape to send mail to 192.168.1.7:2525 it just sits there.
I just downloaded the little Java program you suggested. And the convenient little command line unzip program. Now to try a few things ...
 
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