In one area I have had trouble using Cyrus IMAPd: Delivery.
After considerable effort - and help from others - I believe I've arrived at the fundamental problem: I wish for users to be able to filter mail using arbitrary user level programs, but I don't wish for users to be able to deliver mail to any and every mailbox.
For users to be able to filter mail using arbitrary user level programs - run with the users' privileges - delivery must be possible with the users' privileges. As I understand it, however, allowing a user to deliver - either using filesystem permissions or as an LMTP admin - means allowing a user to deliver to any mailbox.
I also understand, however, that it is possible to authenticate to the Cyrus LMTPd through TCP/IP using SASL, but that "... Only LMTP admins can deliver to LMTPd through TCP/IP sockets." Can someone explain why it is not possible for users, once authenticated, to deliver to only those mailboxes whose ACLs grant them "post" privileges?
Thanks!
Jack
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