Hi Karim
Good :)So it may be worth a try to add the following to IMAPLFLAGS in the Makefile of the mailbox-plugin: IMAPLFLAGS = ... -L/usr/kerberos/lib -lgssapi_krb5 -lkrb5 -lk5crypto -lcom_errAlex, I've added this to the Makefile, and the problem is solved !