[Dovecot] question mailbox format

[Charles Marcus]

Please don't top-post...

 >>> i set mail_location = mbox:/var/spool/mail/%u
 >>> and protocols = pop3s pop3
 >>> why he trys to create and use imap format?`

 >> Platform?
 >> OS Version?
 >> Dovecot version?
 >> Dovecot -n output?

> hello and thx
> 
> a.) Linux
> b.) Redhat (Version unknown)

? You seriously don't know what version of the platform (Redhat) you are 
running on? What about (at least) the linux kernel?

What about dovecot version?

Is the below your *entire* output of dovecot -n?

Lastly - what is happening that makes you think that dovecot 'tries to 
create and use imap'?

For example: log output?

Sorry, not trying to be difficult, but you're really not providing 
enough information for anyone here to be able to help you...