[Dovecot] passwd, gid and uid

[Mauricio Tavares]

	I forgot the answer for this: in 
http://wiki.dovecot.org/AuthDatabase/PasswdFile, we have the passwd file 
defined as

user:password:uid:gid:(gecos):home:(shell):extra_fields

What should the uid and gid be associated with? In my setup I told 
postfix to use Dovecot LDA's deliver, which then is saving files as 
uid:gid of 1500:1500. How would that affect the uid:gid used in the 
passwd file? From what I read in the dovecot's wiki, you want them *not* 
to be anything that has the rights to access the emails. So, does that 
mean any value for them will do?