cyrus.index file

[Adam Tauno Williams]

Quoting Adrian Kovacs <adriankov at gmail.com>:
> how can I check if a user deleted a mail ?
> Is there is history somewhere?

If you are using delayed expunge [*HIGHLY* recommended] then this is  
pretty trivial.  Otherwise I think deleted/expunged is just gone.

> How can I read the cyrus.index file?

cyr_dbtool is one option.  Other you can use cvt_cyrusdb to dump a  
database to a text file.

  cvt_cyrusdb  [ -C config-file ] <old-file> <old-format> <new-file>  
<new-format>

> We are using cyrus & postfix, and would like to check if a user deleted a
> certain mail

You might have something in your log file(s).  But logging an  
individual deletion seems unlikely.