expunge not removing attachments?

[@lbutlr]

On 12 Feb 2019, at 03:45, Ralf Hildebrandt via dovecot <dovecot at dovecot.org> wrote:
> 201629 of 301900 (66.7%) files are modified (mtime) more than 5 days ago, although I just purged everything older than 4 days?

I had problems with this a few years ago, and resorted to simply using find to remove the files from the file system 

/usr/bin/find /usr/local/virtual/*/.Junk*/{cur,new} -type f -mtime +7 -name “*=*" -delete 2> /dev/null
/usr/bin/find /usr/local/virtual/*/.Trash/{cur,new} -type f -mtime +7 -name “*=*" -delete 2> /dev/null