Problem

Impossible to delete old entries in a DB2 mailbox

Some entries are years old!

Resolution

Entries can be deleted from panels:

6.2 INDEX GESTION DES AUTORISATIONS

and

6.8 SITE SUPPRESSION DES ENTREES MAILBOX SITE

It is also possible to delete entries directly from the DB2 mailbox table using SQL requests. (knowing you know what you are doing)