MTAs that pass SMTP AUTH?

[Scott Balmos]

(originally sent with wrong email address. Sorry to the human who has to clear 
out the moderation mailbox. :( )

Hi all,

Does anyone know of any other MTAs that can pass SMTP AUTH info along to 
Cyrus, other than Sendmail? I'm thinking in the base case here, of a single 
server, for an intranet. We've already, unfortunately, ruled out Postfix 
earlier last week, I think I remember reading.

I'm just trying to find a way to do the fabled per-user posting rights ACL 
matching for shared folders. Indeed, I'm not sure, maybe someone could 
clarify this for me. What good is having +p if you can't match it to specific 
users? The question is not counting normal users' private Inboxes. Besides, 
not having +p at all means the mailbox is basically read only... which 
defeats the purpose again because then you wouldn't have any content to put 
in, but that's a logic loop. :D

Earlier, a week or so ago, I posted my current hack, which was to set the 
deliver program to read the username from the user portion of the user+folder 
email address. But, of course, that's not real authentication, since anyone 
could grab a username with posting rights by reading the message (since the 
username is in the email address, which is in the To or Cc field of the 
message). Plus that's using the deliver agent, and not LMTP.

Any ideas, pointers to docs for things like this, anyone else done this 
somewhere, sometime? :(

Thanks.

--
Scott Balmos