passwd.db permissions

[BMcKinney]

Something definitely seems wrong with this picture:

/var/spool/postfix/plesk>ls -hal
total 95K
drwxrwx--- 2 postfix root 1.0K May 5 02:00 .
drwxr-xr-x 17 root root 1.0K Mar 11 10:50 ..
-rw-r--r-- 1 root root 12K Mar 11 10:50 aliases.db
-rw-r--r-- 1 root root 12K Mar 11 10:50 blacklists.db
-rw-r--r-- 1 root root 1 May 4 15:39 master.cf.disabled
-r--rw---- 1 postfix root 11K May 4 15:39 passwd.db
-rw-r--r-- 1 root root 12K Mar 11 10:50 poplock.db
-rw-r--r-- 1 root root 12K Mar 11 10:50 transport.db
-rw-r--r-- 1 root root 24K May 5 02:00 virtual.db
-rw-r--r-- 1 root root 12K May 4 15:39 virtual_domains.db
-rw-r--r-- 1 root root 12K May 5 02:00 vmailbox.db

It seems to me like this whole folder should have owner postfix, but even so, why read only permissions for the owner and read/write permissions for the group for passwd.db?

Also, is this in any way related to the constant stream of DEBUG messages I get in /var/log/messages:

May 5 15:22:13 localhost postfix/smtpd[17597]: DEBUG postfix smtpd supplementary group (12, <unable to get mnemonic name>)
May 5 15:22:13 localhost postfix/smtpd[17597]: DEBUG postfix smtpd supplementary group (89, <unable to get mnemonic name>)
May 5 15:22:13 localhost postfix/smtpd[17597]: DEBUG postfix smtpd real group (89, <unable to get mnemonic name>)
May 5 15:22:13 localhost postfix/smtpd[17597]: DEBUG postfix smtpd effective group (89, <unable to get mnemonic name>)
May 5 15:22:13 localhost postfix/smtpd[17597]: DEBUG postfix smtpd saved group (89, <unable to get mnemonic name>)
May 5 15:22:13 localhost postfix/smtpd[17597]: DEBUG postfix smtpd supplementary group (12, <unable to get mnemonic name>)
May 5 15:22:13 localhost postfix/smtpd[17597]: DEBUG postfix smtpd supplementary group (89, <unable to get mnemonic name>)
May 5 15:22:13 localhost postfix/smtpd[17597]: DEBUG postfix smtpd real group (89, <unable to get mnemonic name>)
May 5 15:22:13 localhost postfix/smtpd[17597]: DEBUG postfix smtpd effective group (89, <unable to get mnemonic name>)
May 5 15:22:13 localhost postfix/smtpd[17597]: DEBUG postfix smtpd saved group (89, <unable to get mnemonic name>)
May 5 15:22:13 localhost postfix/smtpd[17597]: DEBUG postfix smtpd supplementary group (12, <unable to get mnemonic name>)
May 5 15:22:13 localhost postfix/smtpd[17597]: DEBUG postfix smtpd supplementary group (89, <unable to get mnemonic name>)
May 5 15:22:13 localhost postfix/smtpd[17597]: DEBUG postfix smtpd real group (89, <unable to get mnemonic name>)
May 5 15:22:13 localhost postfix/smtpd[17597]: DEBUG postfix smtpd effective group (89, <unable to get mnemonic name>)
May 5 15:22:13 localhost postfix/smtpd[17597]: DEBUG postfix smtpd saved group (89, <unable to get mnemonic name>)
May 5 15:22:13 localhost postfix/smtpd[17597]: sql_sqlite3 plugin: no result found
May 5 15:22:13 localhost postfix/smtpd[17597]: sql_sqlite3 plugin: COMMIT TRANSACTION failed: cannot start a transaction within a transaction
May 5 15:22:13 localhost postfix/smtpd[17597]: Unable to commit transaction
May 5 15:22:13 localhost postfix/smtpd[17597]: DEBUG postfix smtpd supplementary group (12, <unable to get mnemonic name>)
May 5 15:22:13 localhost postfix/smtpd[17597]: DEBUG postfix smtpd supplementary group (89, <unable to get mnemonic name>)
May 5 15:22:13 localhost postfix/smtpd[17597]: DEBUG postfix smtpd real group (89, <unable to get mnemonic name>)
May 5 15:22:13 localhost postfix/smtpd[17597]: DEBUG postfix smtpd effective group (89, <unable to get mnemonic name>)
May 5 15:22:13 localhost postfix/smtpd[17597]: DEBUG postfix smtpd saved group (89, <unable to get mnemonic name>)