cyr_expire on 2.3.16

[Ken Smith]

Hi All,

I'm running 2.3.16 cyrus-imap on Centos 6.

Following a mother board failure on our primary Cyrus server we have 
been using a standby server that normally gets a daily backup from the 
primary. I now have the primary server running again and I'm 
transferring the mailbox data back from the standby.

Through a backup anomaly there a quite a few more mail files in the 
mailbox store than cyrus has in its database.

The primary server is now fine, and preparing to be live again.  If I 
check the content of the imap store with mutt all is well on the primary 
after updating it from the standby, there's just a whole load of surplus 
files in /var/spool/imap/.. that I'd like to delete.

I believe I need the -D  option in cyr_expire but when I run it I get 
this help text

./cyr_expire
cyr_expire [-C <altconfig>] -E <days> [-X <expunge-days>] [-p prefix] 
[-a] [-v]

Is the -D option not valid in this version?

What's the simplest way to tidy the filesystem up?

Many thanks

Ken