I'm attempting to authenticate dovecot against an OpenLDAP server using GSSAPI. Setting ldap_auth_sasl_mechanisms = gssapi causes the server to fail to boot with the error ldap_auth_sasl_mechanism set, but no SASL support compiled in. I'm wondering if there's a dependency that I'm missing, or if there's no support for it with the deb packages provided at https://repo.dovecot.org/.

For reference, I'm running Ubuntu 24.04 with the dovecot apt repository added. dovecot --version outputs 2.4.1-4+ubuntu24.04 (7d8c0e5759). dovecot --build-options yields

Build options: ioloop=epoll notify=inotify openssl io_block_size=8192
SQL driver plugins: mysql postgresql sqlite
Passdb: ldap pam passwd passwd-file sql
Userdb: ldap(plugin) passwd prefetch passwd-file sql

Do I need to compile my own version, or is there something I'm missing? The documentation doesn't provide a lot of answers unfortunately.

Med vänlig hälsning, Fredrik Falk

Fredrik Falk <freddo@ludd.ltu.se> Luleå Universitets Datorförening /LUDD/