Hi Karsten,
You should be able to add multiple userPassword attributes to your directory:
userPassword: {CRAM-MD5}xxx userPassword: {DIGEST-MD5}xxxx userPassword: {SCRAM-SHA-1}xxxx userPassword: {NTLM}xxxx
Karsten Did try this, didn't end end well.
Jun 14 12:59:43 auth: Error: ldap(leonkyneur@itest.com,192.168.99.3,<SQn6QD41TpvLhgGR>): Multiple password values not supported Jun 14 12:59:43 auth: Panic: file passdb-ldap.c: line 99 (ldap_lookup_finish): assertion failed: (password == NULL || scheme != NULL) Jun 14 12:59:43 auth: Error: Raw backtrace: /usr/lib64/dovecot/libdovecot.so.0(+0x8699e) [0x7f0233cd499e] -> /usr/lib64/dovecot/libdovecot.so.0(+0x86a7e) [0x7f0233cd4a7e] -> /usr/lib64/dovecot/libdovecot.so.0(i_fatal+0) [0x7f0233c78b3d] -> /usr/lib64/dovecot/auth/libauthdb_ldap.so(+0x720b) [0x7f022f4f020b] -> /usr/lib64/dovecot/auth/libauthdb_ldap.so(+0x5e2f) [0x7f022f4eee2f] -> /usr/lib64/dovecot/libdovecot.so.0(io_loop_call_io+0x4c) [0x7f0233ce821c] -> /usr/lib64/dovecot/libdovecot.so.0(io_loop_handler_run_internal+0xff) [0x7f0233ce967f] -> /usr/lib64/dovecot/libdovecot.so.0(io_loop_handler_run+0x25) [0x7f0233ce82a5] -> /usr/lib64/dovecot/libdovecot.so.0(io_loop_run+0x38) [0x7f0233ce8458] -> /usr/lib64/dovecot/libdovecot.so.0(master_service_run+0x13) [0x7f0233c7f013] -> dovecot/auth 0 wait, 1 passdb, 0 userdb [0x7f023418a46c] -> /lib64/libc.so.6(__libc_start_main+0xf5) [0x7f0233264b15] -> dovecot/auth 0 wait, 1 passdb, 0 userdb [0x7f023418a661] Jun 14 12:59:43 auth: Fatal: master: service(auth): child 48169 killed with signal 6 (core dumps disabled) Jun 14 12:59:43 imap-login: Warning: Auth connection closed with 1 pending requests (max 0 secs, pid=48164, EOF)