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Pop3d in standalone mode

Posted on 1997-04-22
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Last Modified: 2010-03-18
I was wondering if anyone of you has been tried to modify
and run the pop3 in standalone mode e.g without being
installed and configured as an  inetd's service.
If so , I would really appreciate any feedbacks/comments and  suggestions on what should I do in order to switch.
TIA

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Question by:ida62
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salimfadhley earned 300 total points
ID: 1584425
It would have to be a very heavy modification in order to make it work.

When you load up pop3d it does it's job and then exits as soon as it's finished. Compare that to apache httpd that is able to fork off copies of it'self. You have to modify it so that it runs as a standard system demon process, and waits untill it's got a job to do. It would fork off a new process for every job it's given.

It should be feasable to do the modification, and it's more of a UNIX programming puzzle than a networking puzzle. I reccomend that you read the exclent book:

UNIX network programming by W Richard Stevens.
ISBN 0-13-949876-1

There is an example of a short demon process that behaves in the way you describe on page 294/5 of the current Hardback edition.

As a last note, if you are getting so much demand for your pop3d that inetd is causing too much system load then perhaps you shouldnt be using the freeware pop3d that comes with linux.

Sun make a much more heavy duty commercial pop3d that might be able to cope with your problems.
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