[Postfix-es] Error al grabar maildrop

[Jorge -]

Adjunto el resultado de postfix check

root en servidor:/# postfix check
postfix/postfix-script: warning: not owned by group maildrop:
/var/spool/postfix/public
postfix/postfix-script: warning: not owned by group maildrop:
/var/spool/postfix/maildrop
postfix/postfix-script: warning: not owned by group maildrop:
/usr/sbin/postqueue
postfix/postfix-script: warning: not owned by group maildrop: /usr/sbin/postdrop
postfix/postfix-script: warning: not set-gid or not owner+group+world
executable: /usr/sbin/postqueue
postfix/postfix-script: warning: not set-gid or not owner+group+world
executable: /usr/sbin/postdrop
root en servidor:/# mail
No mail for root
root en servidor:/# postfix check
postfix/postfix-script: warning: not owned by group maildrop:
/var/spool/postfix/public
postfix/postfix-script: warning: not owned by group maildrop:
/var/spool/postfix/maildrop
postfix/postfix-script: warning: not owned by group maildrop:
/usr/sbin/postqueue
postfix/postfix-script: warning: not owned by group maildrop: /usr/sbin/postdrop
postfix/postfix-script: warning: not set-gid or not owner+group+world
executable: /usr/sbin/postqueue
postfix/postfix-script: warning: not set-gid or not owner+group+world
executable: /usr/sbin/postdrop
root en servidor:/#

Cuando hago un postfix check me sale esto, y si miro el log del mail
no para de salir esto

warning: maildrop/D451122130: Error writing message file
Jun 14 21:47:54 servidor postfix/pickup[21477]: 7B24116021: uid=121
from=<logcheck>

Algien sabe que puedo tener mal.
Gracias

-- 
Jorge
jorez11es en gmail.com