[Dovecot] procmail/dovecot error

My procmail log keep filling with the following error

procmail: Program failure (75) of "/usr/libexec/dovecot/deliver" Can't open log file /var/log/dovecot.log: Permission denied

ls -l /usr/libexec/dovecot/deliver -rwxr-xr-x. 1 root root 964760 avr 20 03:55 /usr/libexec/dovecot/deliver

ls -l /var/log/dovecot.log -rw-------. 1 root root 34689 jun 20 15:26 /var/log/dovecot.log

what do I need to check or change

-- Claude Gélinas agr. Phyto Ressources inc.