problems in the log

[Wagner]

Good Afternoon:   I've got a problem in qmail but i'm not listed on the qmail list, so i'll ask if  someone knows about my problem.   Every time an e-mail is delivered to the .qmail-postmaster the log says:   unable to open .qmail-postmaster: access denied   The permission of this file is 600.   What's wrong   Thank you     Wagner Garcia Campagner