# Cyrus IMAP 2.4.17-caldav-beta5 Release Notes

Changes to the Cyrus IMAP Server since 2.4.17-caldav-beta4

- Always verify authorization credentials supplied by the client (a proxy may be reusing an existing connection as a different user)

- Don't bother supporting Digest qop=auth-int since no clients seem to use it

- Don't show addressbook mailboxes in IMAP LIST output

- Plugged leaked memory found by Valgrind

- Better handling of request/response bodies

- Added httpprettytelemetry option

- Added httpallowcors option (Cross-Origin Resource Sharing)

Cyrus IMAP 2.4-caldav Releases