undelete a single message, delete_mode + expunge_mode activated

[Simon Amor]

On 10 Mar 2014, at 20:31, Marcus Schopen <lists at localguru.de> wrote:
> 
> When deleting a single message from Inbox or a subfolder these message
> are not moved into a DELETED structure and keep staying at their
> originally place on filesystem. Those messages are definitely delete. I
> can't see them in my imap client anymore (tested with evolution and
> Thunderbird). How do I undelete these single messages?

Undeleting messages in a mailbox

The following examples assume you have an installation of cyrus where there are binaries in /usr/lib/cyrus-imapd/ - if not, adjust path to suit.

List messages available to unexpunge:

# su cyrus -c "/usr/lib/cyrus-imapd/unexpunge -l user/simon at leaky.org"

Each message will give you something like the following:

UID: 11422
	Size: 7786
	Sent: Mon Mar 10 12:00:00 2014
	Recv: Mon Mar 10 16:06:32 2014
	Expg: Mon Mar 10 16:53:55 2014
	From: john wade <jwade at oakton.edu>
	To  : <info-cyrus at lists.andrew.cmu.edu>
	Cc  : 
	Bcc : 
	Subj: {44}
re: sieveshell aborts with "expected rparen"

To unexpunge a single message:

# su cyrus -c "/usr/lib/cyrus-imapd/unexpunge -udv user/simon at leaky.org 11422"
restoring expunged messages in mailbox 'user/simon at leaky.org'
Unexpunged user/simon at leaky.org: 11422 => 11438
restored 1 expunged messages

To unexpunge all the messages and mark them as undeleted as well:

# su cyrus -c "/usr/lib/cyrus-imapd/unexpunge -adv user/simon at leaky.org"

NOTE: This isn't recursive

It will only restore the inbox. To find other folders run

# su cyrus -c "/usr/lib/cyrus-imapd/ctl_mboxlist -d" | grep leaky.org
leaky.org!user.simon	0 default simon at leaky.org	lrswipkxtecda	
leaky.org!user.simon.Lists	0 default simon at leaky.org	lrswipkxtecda	
leaky.org!user.simon.Lists.cyrus	0 default simon at leaky.org	lrswipkxtecda	
leaky.org!user.simon.Deleted Messages	0 default simon at leaky.org	lrswipkxtecda	

Run the unexpunge command for every folder that needs to have mail undeleted.

For folder names that have spaces ' ', the spaces need to be escaped with a backslash

su cyrus -c "/usr/lib/cyrus-imapd/unexpunge -adv user/simon/Deleted\ Messages at leaky.org"