Delayed expunge / undeleting messages

[Larry Rosenbaum]

unexpunge will segfault if the specified folder does not contain a
cyrus.expunge file.  I have reported this in bug 1905.

> -----Original Message-----
> From: info-cyrus-bounces at lists.andrew.cmu.edu [mailto:info-cyrus-
> bounces at lists.andrew.cmu.edu] On Behalf Of Simon Matter
> Sent: Thursday, January 18, 2007 3:57 AM
> To: Cyrus Info List
> Subject: Re: Delayed expunge / undeleting messages
> 
> > Hi!
> >
> > The purpose of the delayed expunge mode appears to be to reduce the
> > amount of disk I/O during expunge and add responsiveness to the client.
> > But I've been thinking... I've got lots of users that accidentally
> > delete important messages, and sometimes even ask us immediately after
> > deleting (and expunging) those messages if they could be recovered. Now
> > if the message was alive last night when we backed the system up, it
> > could be recovered. But if the message was new, it couldn't.
> >
> > But if there is a delay in expunging the message, the file containing
> > the mesage might just lie around in the mail spool, and could be
> > identified reasonably easily. Is there a way to add the message back
> > to the index? A quick hack would probably be something like copying the
> > message file to N., where N is an unused message number, and
> > reconstructing the mailbox. But is there another way? I always feel
> > uncomfortable writing stuff to the mailspool bypassing Cyrus.
> >
> 
> Isn't that what unexpunge is for?
> 
> List deleted messages:
> su - cyrus -c "/usr/lib/cyrus-imapd/unexpunge -l user.xxxxxxxxx"
> 
> Unexpunge a single message:
> su - cyrus -c "/usr/lib/cyrus-imapd/unexpunge -u -d -v user.xxxxxxxxx
> 14156"
> 
> Unexpunge all deleted messages:
> su - cyrus -c "/usr/lib/cyrus-imapd/unexpunge -a -d -v user.xxxxxxxxx"
> 
> Our expunge delay is 7 days and it works wonderful.
> 
> Simon
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