Change log file for Exim from version 4.21
-------------------------------------------
-Exim version 4.78
+Exim version 4.82
+-----------------
+
+PP/01 Add -bI: framework, and -bI:sieve for querying sieve capabilities.
+
+PP/02 Make -n do something, by making it not do something.
+ When combined with -bP, the name of an option is not output.
+
+PP/03 Added tls_dh_min_bits SMTP transport driver option, only honoured
+ by GnuTLS.
+
+PP/04 First step towards DNSSEC, provide $sender_host_dnssec for
+ $sender_host_name and config options to manage this, and basic check
+ routines.
+
+PP/05 DSCP support for outbound connections and control modifier for inbound.
+
+PP/06 Cyrus SASL: set local and remote IP;port properties for driver.
+ (Only plugin which currently uses this is kerberos4, which nobody should
+ be using, but we should make it available and other future plugins might
+ conceivably use it, even though it would break NAT; stuff *should* be
+ using channel bindings instead).
+
+PP/07 Handle "exim -L <tag>" to indicate to use syslog with tag as the process
+ name; added for Sendmail compatibility; requires admin caller.
+ Handle -G as equivalent to "control = suppress_local_fixups" (we used to
+ just ignore it); requires trusted caller.
+ Also parse but ignore: -Ac -Am -X<logfile>
+ Bugzilla 1117.
+
+TL/01 Bugzilla 1258 - Refactor MAIL FROM optional args processing.
+
+TL/02 Add +smtp_confirmation as a default logging option.
+
+TL/03 Bugzilla 198 - Implement remove_header ACL modifier.
+ Patch by Magnus Holmgren from 2007-02-20.
+
+TL/04 Bugzilla 1281 - Spec typo.
+ Bugzilla 1283 - Spec typo.
+ Bugzilla 1290 - Spec grammar fixes.
+
+TL/05 Bugzilla 1285 - Spec omission, fix docbook errors for spec.txt creation.
+
+JH/01 Bugzilla 1201 & 304 - New cutthrough-delivery feature, with TLS support.
+
+JH/02 Support "G" suffix to numbers in ${if comparisons.
+
+PP/08 Handle smtp transport tls_sni option forced-fail for OpenSSL.
+
+NM/01 Bugzilla 1197 - Spec typo
+ Bugzilla 1196 - Spec examples corrections
+
+JH/03 Add expansion operators ${listnamed:name} and ${listcount:string}
+
+PP/09 Add gnutls_enable_pkcs11 option.
+
+PP/10 Let Linux makefile inherit CFLAGS/CFLAGS_DYNAMIC.
+ Pulled from Debian 30_dontoverridecflags.dpatch by Andreas Metzler.
+
+JH/04 Add expansion item ${acl {name}{arg}...}, expansion condition
+ "acl {{name}{arg}...}", and optional args on acl condition
+ "acl = name arg..."
+
+JH/05 Permit multiple router/transport headers_add/remove lines.
+
+JH/06 Add dnsdb pseudo-lookup "a+" to do an "aaaa" + "a" combination.
+
+JH/07 Avoid using a waiting database for a single-message-only transport.
+ Performance patch from Paul Fisher. Bugzilla 1262.
+
+JH/08 Strip leading/trailing newlines from add_header ACL modifier data.
+ Bugzilla 884.
+
+JH/09 Add $headers_added variable, with content from use of ACL modifier
+ add_header (but not yet added to the message). Bugzilla 199.
+
+JH/10 Add 8bitmime log_selector, for 8bitmime status on the received line.
+ Pulled from Bugzilla 817 by Wolfgang Breyha.
+
+PP/11 SECURITY: protect DKIM DNS decoding from remote exploit.
+ CVE-2012-5671
+
+JH/11 Add A= logging on delivery lines, and a client_set_id option on
+ authenticators.
+
+JH/12 Add optional authenticated_sender logging to A= and a log_selector
+ for control.
+
+PP/12 Unbreak server_set_id for NTLM/SPA auth, broken by 4.80 PP/29.
+
+PP/13 Dovecot auth: log better reason to rejectlog if Dovecot did not
+ advertise SMTP AUTH mechanism to us, instead of a generic
+ protocol violation error. Also, make Exim more robust to bad
+ data from the Dovecot auth socket.
+
+TF/01 Fix ultimate retry timeouts for intermittently deliverable recipients.
+
+ When a queue runner is handling a message, Exim first routes the
+ recipient addresses, during which it prunes them based on the retry
+ hints database. After that it attempts to deliver the message to
+ any remaining recipients. It then updates the hints database using
+ the retry rules.
+
+ So if a recipient address works intermittently, it can get repeatedly
+ deferred at routing time. The retry hints record remains fresh so the
+ address never reaches the final cutoff time.
+
+ This is a fairly common occurrence when a user is bumping up against
+ their storage quota. Exim had some logic in its local delivery code
+ to deal with this. However it did not apply to per-recipient defers
+ in remote deliveries, e.g. over LMTP to a separate IMAP message store.
+
+ This change adds a proper retry rule check during routing so that the
+ final cutoff time is checked against the message's age. We only do
+ this check if there is an address retry record and there is not a
+ domain retry record; this implies that previous attempts to handle
+ the address had the retry_use_local_parts option turned on. We use
+ this as an approximation for the destination being like a local
+ delivery, as in LMTP.
+
+ I suspect this new check makes the old local delivery cutoff check
+ redundant, but I have not verified this so I left the code in place.
+
+TF/02 Correct gecos expansion when From: is a prefix of the username.
+
+ Test 0254 submits a message to Exim with the header
+
+ Resent-From: f
+
+ When I ran the test suite under the user fanf2, Exim expanded
+ the header to contain my full name, whereas it should have added
+ a Resent-Sender: header. It erroneously treats any prefix of the
+ username as equal to the username.
+
+ This change corrects that bug.
+
+GF/01 DCC debug and logging tidyup
+ Error conditions log to paniclog rather than rejectlog.
+ Debug lines prefixed by "DCC: " to remove any ambiguity.
+
+TF/03 Avoid unnecessary rebuilds of lookup-related code.
+
+PP/14 Fix OCSP reinitialisation in SNI handling for Exim/TLS as server.
+ Bug spotted by Jeremy Harris; was flawed since initial commit.
+ Would have resulted in OCSP responses post-SNI triggering an Exim
+ NULL dereference and crash.
+
+JH/13 Add $router_name and $transport_name variables. Bugzilla 308.
+
+
+Exim version 4.80.1
+-------------------
+
+PP/01 SECURITY: protect DKIM DNS decoding from remote exploit.
+ CVE-2012-5671
+ This, or similar/improved, will also be change PP/11 of 4.82.
+
+
+Exim version 4.80
-----------------
PP/01 Handle short writes when writing local log-files.
non-compliant senders.
Analysis and variant patch by Todd Lyons.
-NM/04 Bugzilla 1237 - fix cases where printf format usage no indicated
+NM/04 Bugzilla 1237 - fix cases where printf format usage not indicated
Bug report from Lars Müller <lars@samba.org> (via SUSE),
Patch from Dirk Mueller <dmueller@suse.com>
or write after TLS renegotiation, which otherwise led to messages
"Got SSL error 2".
+TK/01 Bugzilla 1239 - fix DKIM verification when signature was not inserted
+ as a tracking header (ie: a signed header comes before the signature).
+ Patch from Wolfgang Breyha.
+
+JH/01 Bugzilla 660 - Multi-valued attributes from ldap now parseable as a
+ comma-sep list; embedded commas doubled.
+
+JH/02 Refactored ACL "verify =" logic to table-driven dispatch.
+
+PP/15 LDAP: Check for errors of TLS initialisation, to give correct
+ diagnostics.
+ Report and patch from Dmitry Banschikov.
+
+PP/16 Removed "dont_insert_empty_fragments" fron "openssl_options".
+ Removed SSL_clear() after SSL_new() which led to protocol negotiation
+ failures. We appear to now support TLS1.1+ with Exim.
+
+PP/17 OpenSSL: new expansion var $tls_sni, which if used in tls_certificate
+ lets Exim select keys and certificates based upon TLS SNI from client.
+ Also option tls_sni on SMTP Transports. Also clear $tls_bits correctly
+ before an outbound SMTP session. New log_selector, +tls_sni.
+
+PP/18 Bugzilla 1122 - check localhost_number expansion for failure, avoid
+ NULL dereference. Report and patch from Alun Jones.
+
+PP/19 DNS resolver init changes for NetBSD compatibility. (Risk of breakage
+ on less well tested platforms). Obviates NetBSD pkgsrc patch-ac.
+ Not seeing resolver debug output on NetBSD, but suspect this is a
+ resolver implementation change.
+
+PP/20 Revert part of NM/04, it broke log_path containing %D expansions.
+ Left warnings. Added "eximon gdb" invocation mode.
+
+PP/21 Defaulting "accept_8bitmime" to true, not false.
+
+PP/22 Added -bw for inetd wait mode support.
+
+PP/23 Added PCRE_CONFIG=yes support to Makefile for using pcre-config to
+ locate the relevant includes and libraries. Made this the default.
+
+PP/24 Fixed headers_only on smtp transports (was not sending trailing dot).
+ Bugzilla 1246, report and most of solution from Tomasz Kusy.
+
+JH/03 ${eval } now uses 64-bit and supports a "g" suffix (like to "k" and "m").
+ This may cause build issues on older platforms.
+
+PP/25 Revamped GnuTLS support, passing tls_require_ciphers to
+ gnutls_priority_init, ignoring Exim options gnutls_require_kx,
+ gnutls_require_mac & gnutls_require_protocols (no longer supported).
+ Added SNI support via GnuTLS too.
+ Made ${randint:..} supplier available, if using not-too-old GnuTLS.
+
+PP/26 Added EXPERIMENTAL_OCSP for OpenSSL.
+
+PP/27 Applied dnsdb SPF support patch from Janne Snabb.
+ Applied second patch from Janne, implementing suggestion to default
+ multiple-strings-in-record handling to match SPF spec.
+
+JH/04 Added expansion variable $tod_epoch_l for a higher-precision time.
+
+PP/28 Fix DCC dcc_header content corruption (stack memory referenced,
+ read-only, out of scope).
+ Patch from Wolfgang Breyha, report from Stuart Northfield.
+
+PP/29 Fix three issues highlighted by clang analyser static analysis.
+ Only crash-plausible issue would require the Cambridge-specific
+ iplookup router and a misconfiguration.
+ Report from Marcin Mirosław.
+
+PP/30 Another attempt to deal with PCRE_PRERELEASE, this one less buggy.
+
+PP/31 %D in printf continues to cause issues (-Wformat=security), so for
+ now guard some of the printf checks behind WANT_DEEPER_PRINTF_CHECKS.
+ As part of this, removing so much warning spew let me fix some minor
+ real issues in debug logging.
+
+PP/32 GnuTLS was always using default tls_require_ciphers, due to a missing
+ assignment on my part. Fixed.
+
+PP/33 Added tls_dh_max_bits option, defaulting to current hard-coded limit
+ of NSS, for GnuTLS/NSS interop. Problem root cause diagnosis by
+ Janne Snabb (who went above and beyond: thank you).
+
+PP/34 Validate tls_require_ciphers on startup, since debugging an invalid
+ string otherwise requires a connection and a bunch more work and it's
+ relatively easy to get wrong. Should also expose TLS library linkage
+ problems.
+
+PP/35 Pull in <features.h> on Linux, for some portability edge-cases of
+ 64-bit ${eval} (JH/03).
+
+PP/36 Define _GNU_SOURCE in exim.h; it's needed for some releases of
+ GNU libc to support some of the 64-bit stuff, should not lead to
+ conflicts. Defined before os.h is pulled in, so if a given platform
+ needs to override this, it can.
+
+PP/37 Unbreak Cyrus SASL auth: SSF retrieval was incorrect, Exim thought
+ protection layer was required, which is not implemented.
+ Bugzilla 1254, patch from Wolfgang Breyha.
+
+PP/38 Overhaul DH prime handling, supply RFC-specified DH primes as built
+ into Exim, default to IKE id 23 from RFC 5114 (2048 bit). Make
+ tls_dhparam take prime identifiers. Also unbreak combination of
+ OpenSSL+DH_params+TLSSNI.
+
+PP/39 Disable SSLv2 by default in OpenSSL support.
+
Exim version 4.77
-----------------
NM/33 Bugzilla 898: Transport filter timeout fix.
Patch by Todd Rinaldo.
-NM/34 Bugzilla 901: Fix sign/unsigned and UTF mistmatches.
+NM/34 Bugzilla 901: Fix sign/unsigned and UTF mismatches.
Patch by Serge Demonchaux.
NM/35 Bugzilla 39: Base64 decode bug fixes.
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