[Gllug] Cyrusn IMAP Shared Folders

[Bruce Richardson]

On Thu, Mar 25, 2004 at 11:35:42PM +0000, Greater wrote:
> On Thu, Mar 25, 2004 at 10:04:47PM +0000, Mike wrote:
> > No clue - I'm quoting hearsay, where someone on the Cyrus mailing list
> > mentioned that they were moving to sendmail as nothing else supported
> > pass-through of AUTH from SMTP->LMTP. If was certainly mentioned that
> > Postfix developers were actively against this, sendmail just did it
> > automatically unless specifically instructed not to, and Exim wasn't
> > discussed at all.
> > 
> > I'd be curious to know if anyone actually has it working with anything
> > other than sendmail, just for future reference.
> 
> Now I think about it, Exim may support this without any special tricks,
> as it supports the passing of AUTH from SMTP to SMTP (the optional AUTH
> argument to the MAIL verb, that is) and LMTP can be treated as a drop-in
> replacement identically to SMTP in Exim. 

And this turns out to be the case.  To do this in Exim 4, just make sure
that the SMTP Authenticator stores the sender name in an acceptable
format in $authenticated_id.  That done, a transport like the following
should work:

cyrus:
	driver = smtp
	protocol = lmtp
	authenticated_sender = $authenticated_id
	socket = /var/run/cyrus/socket/lmtp

-- 
Bruce

I see a mouse.  Where?  There, on the stair.  And its clumsy wooden
footwear makes it easy to trap and kill.  -- Harry Hill
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