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    PaulHowarth/Blog/2016-04-28

Thursday 28th April 2016

Local Packages

  • Updated dovecot to 2.2.24:

    • doveconf now warns if it sees a global setting being changed when the same setting was already set inside some filters (a common mistake has been adding more plugins to a global mail_plugins setting after it was already set inside protocol { .. }, which caused the global setting to be ignored for that protocol)

    • LMTP proxy: Increased default timeout 30s -> 125s, which makes it less likely to reach the timeout and cause duplicate deliveries

    • LMTP and indexer now append ":suffix" to session IDs to make it unique for the specific user's delivery (fixes duplicate session ID warnings in stats process)

    • Added dict-ldap for performing read-only LDAP dict lookups

    • lazy-expunge: All mails can be saved to a single specified mailbox

    • mailbox { autoexpunge } now supports wildcards in mailbox names

    • doveadm HTTP API: Added support for proxy commands

    • imapc: Reconnect when getting disconnected in non-selected state

    • imapc: Added imapc_features=modseq to access MODSEQs/HIGHESTMODSEQ; this is especially useful for incremental dsync

    • doveadm auth/user: Auth lookup performs debug logging if -o auth_debug=yes is given to doveadm

    • Added passdb/userdb { auth_verbose=yes|no } setting

    • Cassandra: Added user, password, num_threads, connect_timeout and request_timeout settings

    • doveadm user -e <value>: Print <value> with %variables expanded

    • Huge header lines could have caused Dovecot to use too much memory (depending on config and used IMAP commands); typically this would result in only the single user's process dying with out of memory due to reaching service { vsz_limit } - not a global DoS

    • dsync: Detect and handle invalid/stale -s state string better

    • dsync: Fixed crash caused by specific mailbox renames

    • auth: Auth cache is now disabled passwd-file; it was unnecessary and it broke %variables in extra fields

    • fts-tika: Don't crash if it returns 500 error

    • dict-redis: Fixed timeout handling

    • SEARCH INTHREAD was crashing

    • stats: Only a single fifo_listeners was supported, making it impossible to use both auth_stats=yes and mail stats plugin

    • SSL errors were logged in separate "Stacked error" log lines instead of as part of the disconnection reason

    • MIME body parser didn't handle properly when a child MIME part's --boundary had the same prefix as the parent

  • Updated pigeonhole to 0.4.14:

    • The address test now allows specifying the X-Original-To header

    • Implemented the Sieve imapsieve extension and its IMAP counterpart (RFC 6785) as a set of plugins, which allows running Sieve scripts at IMAP activity, rather than at delivery

    • Adjusted the Sieve ihave extension to allow capability tests to be performed at runtime; this way, scripts can be written that work both at delivery and from IMAP

    • Implemented support for runtime trace debugging, which works much like the Dovecot rawlog facility

    • Added a "sieve_user_email" setting that configures the user's primary email address; this is mainly useful to have a user email address available in IMAP, where envelope data is unavailable

    • Implemented the dovecot-specific "vnd.dovecot.report" extension, which allows sending report messages in the Message Abuse Reporting Format (RFC 5965)

    • extprograms plugin: Fixed epoll() panic caused by closing the output FD before the output stream

    • Made sure that the local part of a mail address is encoded properly using quoted string syntax when it is not a dot-atom

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