I am new and for sure I did something stupid

I trying to use dovecot with sendmail but I am receiving this error

teststat deliver(usertest): net_connect(/var/run/dovecot/auth-master) failed: Permission denied stat=Deferred: local mailer (/usr/libexec/dovecot/deliver) exited with EX_TEMPFAIL

on send mail I added FEATURE(local_procmail', /usr/libexec/dovecot/deliver',deliver -d $u') MODIFY_MAILER_FLAGS(LOCAL', `-f') MAILER(procmail)dnl

I am using the nis, but I do not think that this is the problem since I am able to login with imaps

# 1.0.5: /etc/dovecot.conf protocols: imaps login_dir: /var/run/dovecot/login login_executable: /usr/libexec/dovecot/imap-login mail_location: maildir:/var/mail/newmail/%u:INDEX=/var/indexes/newmail/%u mail_debug: yes auth default: passdb: driver: pam args: session=yes dovecot userdb: driver: passwd socket: type: listen client: path: /var/run/dovecot/auth-client mode: 432 master: path: /var/run/dovecot/auth-master mode: 384