I am new to dovecot administration. I’ve read the Wiki but that hasn’t given me the understanding I need.

When I query my LDAP (on macOS) on a value for user ‘gerben’, I can get that:

dumbledore:~ gerben$ dscl /LDAPv3/127.0.0.1 -read /users/gerben GeneratedUID
GeneratedUID: 780D870E-6B00-478E-AB70-3D3307215A82

I would like to use that value in dovecot settings, e.g. something like

user_attrs = \
  =mail=maildir://Library/Server/Mail/Data/mail/%{ldap:GeneratedUID}

Is this possible and if so what do I exactly need to do to get this working?

Gerben Wierda
Chess and the Art of Enterprise Architecture
Mastering ArchiMate
Architecture for Real Enterprises at InfoWorld
On Slippery Ice at EAPJ