On Sat, 17 Apr 1999, Steve Lamb wrote:
> Is there any way to have Exim allow relay mail if it is from an
> individual regardless of whether or not they are on a blocked IP for
> relaying?
I don't believe that there is any direct to do that in exim itself, but
others might be able to suggest ways.
However, there are a couple of options:
(1) There have been scripts posted (or at least discussed) in the past
for doing something like STMP after POP (or IMAP). So, if you have
a POP3 server on the same host that exim is running on, your POP
authentication from your dynamic host gets that dynamic host
temporarily added to a list of allowed relay sources
(2) Use something like ssh tunnelling. If you open up an SSH session
from your box to the host running exim, then you can to port
forwarding, so that say port 2525 on your client box is forwarded
through the SSH channel to port 25 on the mail hub. exim will then
so such connections as coming in on port 25 from its localhost.
There are some headaches with ssh (at least ssh1) that I've learned
to live with, but this does work for a number of things. First,
your session is encrypted nicely. Another things is that if your
ISP (like mine) captures anything bound for port 25 and sends it
to their own mail servers, this is one of the few ways you will
actually be able to talk SMTP to the machine that you want to.
Despite all that advice, I don't see why you just don't relay off of your
ISPs mailhub. That is what it is there for. I applaud the practice of
those ISPs that capture port 25 traffic and force it through their mail
hubs. (In fact, I now rely on that feature of freeserve.net, it means
that I can use the same client configuration whether I have dialed up
to my freeserve account or to Cranfield.ac.uk.) I don't want to start
a war about that policy, but if you were a Cranfield user I would tell
you that you would have to use the mailhub of your ISP.
-j
--
Jeffrey Goldberg +44 (0)1234 750 111 x 2826
Cranfield Computer Centre FAX 751 814
J.Goldberg@??? http://WWW.Cranfield.ac.uk/public/cc/cc047/
Relativism is the triumph of authority over truth, convention over justice.
--
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