which quota backend for cyrus imapd?

[Thomas Jarosch]

Hi,

which quota backend is the recommended backend nowadays?

Obvious candidates are "quotalegacy" and "skiplist".

quotalegacy has per-user files while "skiplist"
would use one central file for all users,
which means more lock contention.

The man page entry for "quota_db" doesn't give
any explanation which backend to prefer.

Which backend is used at Fastmail? :)

Best regards,
Thomas Jarosch