Voice Mail directory Permissions

Can anybody tell me what the correct permissions for the voice mail directories be for each user. I had a problem on one machine that the voicemails were not showing up on the phone. I checked the var/spool/asterisk/voicemail/default dir and found that some permissions were wrong. I changed them for the extension that had the problem and all is good. However on a new install the permissions are different than on my last machine. I don’t want to go chaning them until I know what the correct ones are.

Thanks

Rob

Ps. This is what they are set at on the new install

/var/spool/asterisk/voicemail/default/3021 are an octal of 1322 with user and group as asterisk.
on the other machine I think the octal is 665.