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    case properly falls back to reinterpreting the entire header as Windows-
    1252.
    Note:  In the absence of the experimental "UTF8SMTP" SMTP extension,
    non-ASCII characters are formally illegal in raw message headers, so this
    really only affects exceptional cases.
  * Eliminated some corner case "Use of uninitialized value" warnings.

  Courier::Config:
  * Lower-cased and slightly adjusted constant/method names.  Compatibility
    aliases for the old names are provided.
  + Added courier_executable() and courier_version() methods.  See man-page.

  Courier::Util:
  + Added as a utility module for use by other modules of the Courier::Filter
    framework.

  Courier::Filter::Module:
  + Added warn() method for writing warning messages to syslog.

  DNSBL filter module:
  * Ignore messages received via IPv4/IPv6 loopback addresses (i.e., self
    submissions).

  SPF filter module:
  * Use Mail::SPF instead of the old Mail::SPF::Query.  Added new "spf_options"
    option with options for Mail::SPF::Server.
  + The switch to Mail::SPF brings IPv6 support!
  + Support both MAIL FROM and HELO checks separately.
  ! Deprecated "fallback_guess" and "trusted_forwarders" options in favor of
    the "default_policy" and "tfwl" keys to the "spf_options" option.  The old
    options induce a warning when specified but are still supported for now.
    Due to the move from the obsolete Mail::SPF::Query module to the Mail::SPF,
    the (yet unreleased) Mail::SPF::BlackMagic extension module is now required
    when using these non-standard options.
  ! Deprecated the "unknown" and "error" SPF result codes in favor of the new
    "permerror" and "temperror" ones defined in RFC 4408.  The old result codes
    induce a warning when specified in the "match_on" option but are still
    supported for now.
  * Ignore messages with an empty identity of the configured scope (esp. empty
    MAIL FROM, i.e., bounces) or with an identity in the form of an IP address
    literal ("[<ip-address>]").

  SPFout filter module:
  * Use Mail::SPF instead of the old Mail::SPF::Query.  Added new "spf_options"
    option with options for Mail::SPF::Server.
  * Use the IPv6-supporting Net::Address::IP::Local rather than the IPv4-only
    Net::Address::IPv4::Local module for auto-discovery of the local system's
    outbound IP addresses.  Note that auto-discovery does not work from behind
    NATs, in which case outbound IP addresses must be configured manually using
    the "outbound_ip_addresses" option.
  + The switch to Mail::SPF and Net::Address::IP::Local brings IPv6 support!
  ! Deprecated the "unknown" and "error" SPF result codes in favor of the new
    "permerror" and "temperror" ones defined in RFC 4408.  The old result codes
    induce a warning when specified in the "match_on" option but are still
    supported for now.
  * Ignore messages with an empty identity of the configured scope (esp. empty
    MAIL FROM, i.e., bounces) or with an identity in the form of an IP address
    literal ("[<ip-address>]").

  SpamAssassin filter module:
  + Added a "prefs_file" option for easy configuration of Courier::Filter
    specific SpamAssassin preferences.  SpamAssassin now will not read any
    preferences besides its default configuration files unless this option is
    specified.
  * Eliminated memory leak by properly cleaning up Mail::SpamAssassin::Message
    objects.

  BlankBody filter module:
  + Added for matching blank message bodies (a stupid spammer symptom).

  FakeDate filter module:
  + Added for matching implausible and malformed date header fields.

  SendCopy filter module:
  + Added for sending message copies to additional recipients.

 -- Julian Mehnle <julian@mehnle.net>  Sun, 23 Mar 2008 00:36:39 +0000

courier-filter-perl (0.17) unstable; urgency=low

  Debian:
  * Recommends: libmime-perl, not libmime-tools-perl.         (Closes: #297730)
  * Recommends: libio-stringy-perl (>= 2.110), libmail-spamassassin-perl,
    libarchive-zip-perl.

  Courier::Filter:
  * If socket already exists, check whether it is dead or alive.  If it is
    dead, remove it and start up normally.  If it is alive, die like before.
                                                              (Closes: #326785)
  * Ignore connections that don't send any data.

  Courier::Message:
  * Decode header text as "UTF-8" encoded, not as "utf8" encoded.  Starting
    with Perl 5.8.7, this does make a difference.  "utf8" allows invalid
    Unicode codepoints (such as UTF-16 surrogates), while "UTF-8" (the official
    standard UTF-8) doesn't.  We want to avoid invalid codepoints because they
    tend to cause trouble later.
  * Don't die on invalid characters in encoded-word chunks.  If an encoded-word
    cannot be decoded, retain it undecoded.
  * "authenticated" property: refined parsing of "Received:" header and "AUTH:"
    authentication information.
  * Added "authenticated_user" property.
  * Corrected documentation of "header" property.

  SPFout filter module:
  * Don't be pedantic about what our "public" IPv4 address is vis-à-vis the
    various recipient MXes.  Assume we just have a single public address that
    applies to all recipient MXes.  (Let's see if anyone out there actually has
    a more complex setup...)

  Parts filter module:
  * Requires libio-stringy-perl (>= 2.110), libarchive-zip-perl.

  SpamAssassin filter module:
  * Added for SpamAssassin-based spam detection.
  * Requires libmail-spamassassin-perl.

  Miscellaneous:
  * Relaxed sender IPv4 address matching in DNSBL, SPF, and SPFout filter
    modules, making the "::ffff:" IPv6 prefix optional and thus supporting
    IPv6-disabled versions of Courier.