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# 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