Sorry for the delay. Please post this kind of message to public mailing
lists, not to personal email addresses.

> Please forward to possible more appropriate recipients.
> 
> I have subscribed to several mailman lists, e.g. tagging
> tagg...@openstreetmap.org
> <https://lists.openstreetmap.org/listinfo/tagging>.
> I used the same gmail account as subscriber for all of them.
> I direct each list's e-mail into its own folder (gmail "label") with a
> gmail filter.
> Accessing that archive to search it, reply to old messages etc. is a
> real convenience.
> 
> I'd love to share that archive with other people.
> But giving them write access to it would mean its deterioration.
> 
> Si, I wondered if Imapproxy is able to provide public, read-only access
> to such a server.

SquirrelMail IMAP Proxy could be changed to block a list of IMAP
commands, but it would be better if you created a list of commands that
were acceptable and block all others.  Still, keep in mind that even
"innocent" commands such as that to read a message can make changes in
the message store (in this case, potentially change a message state from
unread to read). It's possible there could be worse examples.

But, if someone wants to come up with a list of IMAP commands that would
comprise a read-only proxy setup, I'd consider adding it since it looks
somewhat trivial (FYI, ~line 1354 in Raw_Proxy() in src/request.c).  I'm
not sure, however, if there would be other ill effects (for example,
responding "NO" or "BAD" to disallowed commands might confuse the
client, as would issuing a faked (dishonest) "OK" response).

> And if someone could make the configuration and provide a server to run
> that experiment?

BTW, you'd want to configure auth_sasl_plain_username,
auth_sasl_plain_password and auth_shared_secret and give out the shared
secret to anyone allowed to use the system.  Have fun proxying mass
access to Gmail - feels like any number of things could go wrong.

> I would extend the configuration and make the mailman to gmail message
> conversion.
> 
> I run a few byethost-like free servers. I don't know if that imapproxy
> configuration could be installed  on them.  If that were possible, I
> would do it.

My gut says there are better ways to provide mailing list archives to
the public.  Maybe you should collaborate to bring back gmane.org (oh
wait, it's back).

-- 
Paul Lesniewski
SquirrelMail Team
Please support Open Source Software by donating to SquirrelMail!
http://squirrelmail.org/donate_paul_lesniewski.php

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