On Wed, 17 Oct 2007, Dustin J. Mitchell wrote:

Obviously, this isn't ideal.  I'm surprised nobody else has been
snagged by this before.  I've been using Amanda on Cyrus mailboxes for
years, with lots of recoveries.  I guess I've just gotten lucky.

We have no experience with cyrus, yet, but have been talking about it
for a while.  After reading this I forwarded it to a co-worker, who wrote
back this:

Don't let cyrus do it.

From http://cyrusimap.web.cmu.edu/imapd/overview.html#singleinstance

--
Single Instance Store

If a delivery attempt mentions several recipients (only possible if the MTA is
speaking LMTP to lmtpd), the server attempts to store as few copies of a
message as possible. It will store one copy of the message per partition, and
create hard links for all other recipients of the message.

Single instance store can be turned off by using the "singleinstancestore" flag
--


Obviously this won't help the person with the failing restore, but it's
something to consider for everyone else.  Who really is short enough on
disk space in this day and age that they think storing duplicate e-mail
with hard links is still a good idea?

(And just btw, we had lately been losing the battle against spam using
spamassassin, even though it was pretty effective when first deployed.
We recently added graylisting and are seeing very few spam making it
through now.)

-Mitch