[Dovecot] Read-only mail folders

[Chris Wakelin]

Is it possible to have folders on read-only partitions in Dovecot 
1.0-stable?

We have a NetApp fileserver which would probably be accessed via NFS 
(though iSCSI is possible) and which stores readonly "snapshots" of 
every directory accessible as .snapshot (but usually hidden from the 
operating system). It would be very nice to set up a "snapshot" 
namespace something like :-

namespace public {
  separator = /
  prefix = "#snapshot/"
  location = maildir:%h/Maildir/.snapshot/nightly.0
  hidden = yes
}

so that users could recover messages from say yesterday's version of 
their mailbox.

Unfortunately, Dovecot always seems to want to write to the directory, 
even when indexes are stored elsewhere (as recommended with NFS anyway, 
I think) using INDEX=whatever in the location line.

Best Wishes,
Chris

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Christopher Wakelin,                                c.d.wakelin at reading.ac.uk
IT Services Centre, The University of Reading,       Tel: +44 (0)118 378 8439
Whiteknights, Reading, RG6 2AF, UK                   Fax: +44 (0)118 975 3094