From mboxrd@z Thu Jan  1 00:00:00 1970
Message-ID: <d5790b0f666f8054c728816c75b8f4eb@plan9.ucalgary.ca>
To: 9fans@cse.psu.edu
Subject: Re: SMTP+SPF (was: [9fans] Re: new release?)
From: andrey mirtchovski <mirtchov@cpsc.ucalgary.ca>
In-Reply-To: <6616fcacdcb85189b46c900dfdd6d81e@plan9.bell-labs.com>
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Date: Wed, 25 Feb 2004 18:50:00 -0700
Topicbox-Message-UUID: f755fa88-eacc-11e9-9e20-41e7f4b1d025

> It thus forces you to always go through a server that is authorized to send
> mail from your domain.  Therefore, when you're off visiting somewhere, you
> still have to use your own domain's smtp server.  That might not be possible
> if you're behind a firewall.  For example, at Lucent one cannot make smtp
> connections out of the company.  One must use internal servers.  Therefore,
> russ couldn't send messages from here as rscatswtch.com or I as
> presottoatclosedmind.org since we'ld have to do through lucent servers.

Of course, with Plan 9 this particular problem doesn't exist -- just
import /net from the allowed machine...

For example, my home IP (from which I'm composing this email right
now) is banned from MAPS, probably due to the previous owner,
cpsc.ucalgary.ca's mail servers thus reject any mail I send to myself
from home.  To overcome this obstacle I simply run a script binding
the network stack of my main cpu server making every mail (including
this one) appear to be sent from plan9.ucalgary.ca...

	home% cat '/env/fn#mimport'
	fn mimport {import plan9 /net /net}
	home%

This isn't news to hardcore 9fans, but others not familiar with the
system may find it an interesting example of 9p's versatility.

andrey