[Dovecot] setting mail_home and vacation

[Andreas Meyer]

Hello!

dovecot version 2.1.7

I set up vacation with sieve. We have mboxes and maildirs and in dovecot.conf
mail_location = mbox:/var/spool/vhosts/%d/dovecotprivate/%n:INBOX=/var/spool/vhosts/%d/%n

Error: User archiv at xyz.de doesn't have home dir set, disabling duplicate database
Dec 19 20:37:03 lda(archiv at xyz.de): Error: sieve: sieve script file path ~/.dovecot.sieve is relative to home directory, but home directory is not available.
Dec 19 20:37:03 lda(archiv at xyz.de): Error: sieve: failed to access user's sieve script ~/.dovecot.sieve (using default script location instead)

When I set
mail_home = mbox:/var/spool/vhosts/%d/%n:INBOX=/var/spool/vhosts/%d/%n

I get this for mboxes in the log: 
Error: user archiv at xyz.de: Relative home directory paths not supported: mbox:/var/spool/vhosts/xyz.de/archiv:INBOX=/var/spool/vhosts/xyz.de/archiv

The .dovecot.sieve script of the user seems to be found, a vacation response is sent
and the email is stored mail into mailbox 'INBOX'

What is wrong?

  Andreas