postfix/master master.lock: permission denied

[Wade Smart]

I just installed fetchmail/postfix/dovecot (not the postfix-dovecot setup) and
I have the error:

postfix/master[9595]: fatal: open lock file
/var/lib/postfix/master.lock: cannot open file: Permission denied.

master.lock owner is Dovecot with -rw------ permissions.

I dont have this on my old system so I dont know what this is.

Wade
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Linux since June 2005