mchk: Unable to initialize quota settings for someuser@somedomain.com
If you’re working in Plesk and you receive this error:
mchk: Unable to initialize quota settings for someuser@somedomain.com
Run this command to fix the issue, but be patient:
find /var/qmail/mailnames -type d -name '.*' ! -name '.spamassassin' -ls -exec touch '{}'/maildirfolder \; -exec chown popuser:popuser '{}'/maildirfolder \;
Thanks to Mike Jackson for this one.