--- conf/postfix-script.orig	2022-12-29 06:29:06
+++ conf/postfix-script	2023-04-18 16:45:04
@@ -327,7 +327,7 @@
 
 	# Check Postfix mail_owner-owned directory tree owner.
 
-	find `ls -d $queue_directory/* | \
+	find `/bin/ls -d $queue_directory/* | \
 	    grep -E '/(saved|incoming|active|defer|deferred|bounce|hold|trace|corrupt|public|private|flush)$'` \
 	    ! \( -type p -o -type s \) ! -user $mail_owner \
 		-exec $WARN not owned by $mail_owner: {} \;