I have a scenario where I have two users, one account (user1) with it's own Maildir account, and another account (user2) (which I wish to see the same messages) with a symlinked Maildir to user1's Maildir.  I.E.:

/home/user1/Maildir /home/user2/Maildir (where this Maildir is symlinked to /home/user1/Maildir)

Both users are in a group together (usergroup), and so all of the permissions on the Maildir, new, cur, etc folders are rwxrwx--- or rw-rw----.  All mail gets created and delivered correctly, both users can move and create files, and everything generally seems to be working fine.  However, I did notice one error showing up in the system logs:

May 2 11:35:13 userserver dovecot: imap(user1): Error: inotify_add_watch(/home/user1/Maildir/dovecot-uidlist.lock) failed: Permission denied May 2 11:36:27 userserver dovecot: imap(user2): Error: inotify_add_watch(/home/user2/Maildir/dovecot-uidlist.lock) failed: Permission denied May 3 10:10:11 userserver dovecot: imap(user2): Error: inotify_add_watch(/home/user2/Maildir/.Folder1/dovecot-uidlist.lock) failed: Permission denied

I've managed to catch a glimpse of a lock file, as it comes and goes very quickly, and it is permissioned as so:

-rw-rw----  1 user1 usergroup       10 May  5 11:39 dovecot-uidlist.lock

So I'm not sure what exactly the permissions issue is then?  The file seems to have the appropriate group permissions for each user to read from and write to it.

Again, this is the only error I'm getting, and everything has been working fine.  I did read the Dovecot wiki talking about symlinking mailboxes, and it refers to symlinking each box/folder individually and not the entire Maildir folder as I've done, but since each individual box/folder has its own dovecot-uidlist I imagine I might run into this same issue anyway?  Anyway, I'd like to squelch the error if I can, so are there any thoughts as to why the lock files are having trouble with inotify_add_watch?

-Dave