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===============================
Cyrus IMAP 2.4.18 Release Notes
===============================
* Security fix: handle urlfetch range starting outside message range
* A bunch of cleanups and fixes to compiling
* A bunch of sieve cleanups
* Enhanced SSL/TLS configuration options
* Disable use of SSLv2/SSLv3
* Allow SQL backend for mboxlist and statuscache (thanks Julien Coloos)
* Fixed task 116: correct LIST response for domains starting with 'inbox.'
* Fixed task 76: fixed lmtpd userdeny db checks (thanks Leena Heino)
* Fixed bug #3856: lmtpd now performs userdeny checks
* Fixed bug #3848: support charset aliases in encoded headers
* Fixed bug #3853: disconnect_on_vanished_mailbox: release mailbox lock before exiting (thanks Wolfgang Breyha)
* Fixed bug #3415: fixed nntpd LIST/GROUP bug
* Fixed bug #3784: no longer crash in THREAD REFERENCES when messages reference themselves
* Fixed bug #3757: don't segfault on mailbox close with no user
New ssl/tls configuration options
---------------------------------
tls_compression: 0
Enable TLS compression. Disabled by default.
tls_eccurve: prime256v1
Select the elliptic curve used for ECDHE.
tls_prefer_server_ciphers: 0
Prefer the cipher order configured on the server-side.
tls_versions: tls1_0 tls1_1 tls1_2
Disable SSL/TLS protocols not in this list.
:ref:`imap-release-notes-2.4`
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