On 23 Sep 2020, at 15:37, Sami Ketola <sami.ketola@dovecot.fi> wrote:

Pigeonhole can read sieve scripts from ldap too https://wiki.dovecot.org/Pigeonhole/Sieve/Configuration/LDAP

Thanks for confirming this - it will need some updates to our LDAP, but this is another thing for us to try.

Regards,
Graham