Another mailbox submission address question

[Patrick Gibson]

I have a question about the mailbox submission addresses and 
permissions...

Let's say I have a mailbox in my root called "notices". Let's also say 
that I have set the ACL so that the user "patrick" can do everything, 
and everyone else can just read.

 > lam notices
patrick lrswipcda
anyone lrs

I originally assumed that with these permissions, I would be able to 
send a message to +notices at mydomain, and it would get delivered into 
this mailbox. Instead, I get a "permission denied" bounceback. It then 
occurred to me, that it would be difficult for Cyrus to safely identify 
incoming emails coming from the user "patrick", as the email comes 
through the MTA.

So, is it therefore the case that if you want to use the mailbox 
submission addresses, they would basically have to be write-able by 
anyone? And thus, if I didn't want to have that kind of ACL, the only 
way to deliver messages into this folder would be to use my IMAP client 
to drag a message in there?

Thanks,

Patrick

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