Re: [Sqlrelay-discussion] courier w/ sqlrelay

[David M. <dav...@fi...>]

On Tue, 2007-04-24 at 17:01 -0500, Gabriel Millerd wrote:
> On 4/24/07, David Muse <dav...@fi...> wrote:
> > I've heard of courier-auth-postfix, the pop-before-smtp solution for
> > postfix where pop logins are recorded in mysql.  Is this what you're
> > referring to?
> >
>    This is more for posterity than for aiding me, I have moved on to
> Dovecot. Courier is nice for plug-in play, but scaled horribly.
> 
>    Courier has its own auth-daemon for username, password, uid, gid,
> homedir, attrib lookups. All of its products (pop3, pop3s, imap,
> imap3, and mta, a webmail, a groupware piece) use this daemon. It also
> has its own flavor of "daemon tools" where these pieces are   cascaded
> in a series of subprocesses. Where a ps -ef command would give you the
> following, which I edited for easy of viewing:
> 
> /usr/sbin/courierlogger /usr/lib/courier/authlib/authdaemond.
>   \_ /usr/lib/courier/authlib/authdaemond.mysql
>   \_ /usr/lib/courier/authlib/authdaemond.mysql
>   \_ /usr/lib/courier/authlib/authdaemond.mysql
> 
> The actual process /usr/lib/courier/authlib/authdaemond.mysql is the
> only part that is linked to libmysqlclient. So using the LD_PRELOAD
> method we would edit its parent process
> "/usr/lib/courier/authlib/authdaemond" and export the correct library
> that corresponds with what we found from the ldd output. And when we
> get frustrated we can edit all the scripts all the way back to the
> "/etc/init.d" script with the same results. It doesn't work, perhaps
> flushing its environment in some way?

Weird.  Yeah, maybe it is.  That would make sense.  Can't think of
anything else that would cause it.

> 
> I have a few products using this method and the results are amazing.
> Obviously an underutilized / promoted product.
> 

Just curious, what other products have you used it with?

Dave