Extract from the RELEASE_NOTES file:
Incompatible changes with snapshot-20001210
===========================================
If this release does not work for you, you can go back to a previous
Postfix version without losing your mail, subject to the "incompatible
changes" listed for previous Postfix releases below.
When delivering to /file/name (as directed in an alias or .forward
file), the local delivery agent now logs a warning when it is unable
to create a /file/name.lock file. Mail is still delivered as before.
The "sun_mailtool_compatibility" feature is going away (a compatibility
mode that turns off kernel locks on mailbox files). It still works,
but a warning is logged. Instead of using "sun_mailtool_compatibility",
specify the mailbox locking strategy as "mailbox_delivery_lock =
dotlock".
The Postfix SMTP client now skips SMTP server replies that do not
start with "CODE SPACE" or with "CODE HYPHEN" and flags them as
protocol errors. Older Postfix SMTP clients silently treated "CODE
TEXT" as "CODE SPACE TEXT", i.e. as a valid SMTP reply.
This snapshot does not yet change default relay settings. That
change alone affects a dozen files, most of which documentation.
This may be an incompatibility with some people's expectations,
but such are my rules - between code freeze and release no major
functionality changes are allowed.
Several interfaces of libutil and libglobal routines have changed.
This may break third-party code written for Postfix. In particular,
the safe_open() routine has changed, the way the preferred locking
method is specified in the sys_defs.h file, as well as all routines
that perform file locking. When compiling third-party code written
for Postfix, the incompatibilities will be detected by the compiler
provided that #include file dependencies are properly maintained.
Major changes with snapshot-20001210
====================================
This snapshot includes bugfixes that were already released as
patches 12 and 13 for the 19991231 "stable" release:
- The queue manager could deadlock for 10 seconds when bouncing
mail under extreme load from one-to-one mass mailings.
- Local delivery performance was substandard, because the per-user
concurrency limit accidentally applied to the entire local
domain.
The mailbox locking style is now fully configurable at runtime.
The new configuration parameter is called "mailbox_delivery_lock".
Depending on the operating system type, mailboxes can be locked
with one or more of "flock", "fcntl" or "dotlock". The command
"postconf -l" shows the available locking styles. The default
mailbox locking style is system dependent. This change affects
all mailbox and all "/file/name" deliveries by the Postfix local
delivery agent.
The new "import_environment" and "export_environment" configuration
parameters now provide explicit control over what environment
variables Postfix will import, and what environment variables
Postfix will pass on to a non-Postfix process. This is better than
hard-coding my debugging environment into public releases.
The "mailbox_transport" and "fallback_transport" parameters now
understand the form "transport:nexthop", with suitable defaults
when either transport or nexthop are omitted, just like in the
Postfix transport map. This allows you to specify for example,
"mailbox_transport = lmtp:unix:/file/name".
The MYSQL client now supports server connections over UNIX-domain
sockets. Code provided by Piotr Klaban. See the file MYSQL_README
for examples of "host" syntax.
See ChangeLog and documentation for a full list of bugs fixes and
new features. Release highlights include the addition of STARTTLS
extensions to SMTP and callback SMTP checks to verify sender addresses
on lightly loaded mail servers - prevent spam from made-up addresses.
This port includes the following flavors:
no_x11 - do not build eximon which requires X11
no_perl - do not include perl support
no_tls - do not include SSL/TLS support
mysql - support mysql queries for lookups
pgsql - support pgsql queries for lookups
ldap - support ldap (OpenLDAP) queries for lookups
All these queries are independent.
Maintainer has been temporarily chaged to me for feedback, until
Sebastian is back and available to support the port.
Testing has been limited to i386.
--
Postfix official release 19991231 patchlevel 11 is available.
This release folds in code changes from recent snapshot releases.
These changes track changes in RedHat Linux, fix two minor bugs in
the Postfix queue manager scheduling behavior that were spotted by
Patrik Rak, and turn off one misfeature.
- On RedHat Linux 7.0, you must install the db3-devel RPM before
you can compile the Postfix source code.
- The queue manager could schedule too many connections to the same
destination (domain name spelled in upper and lower case).
- The queue manager could schedule too few connections to the same
destination (back off even in case of successful delivery).
- The confusing site_hog_factor feature is disabled by default. It
caused unnecessary mail delivery delays on inbound mail gateways.
This introduces a new 'pop3' flavour, since the package bundles a POP3
server that can read from maildirs and use the same authmodules also.
And a number of stability fixes, including leaking file descriptions,
maildir handling, and also compliance with the latest IETF IMAP drafts.
Quote from the RELEASE_NOTES file:
Incompatible changes with snapshot-20001121
===========================================
If this release does not work for you, you can go back to a previous
Postfix version without losing your mail, subject to the "incompatible
changes" listed for previous Postfix releases below.
Major changes with snapshot-20001121
====================================
Support for RedHat Linux 7.0. On RedHat Linux 7.0, you must install
the db3-devel RPM before you can compile the Postfix source code.
The mailbox_transport feature works again. It was broken when the
"require_home_directory" feature was added.
More general virtual domain support. Postfix now supports both
Sendmail-style virtual domains and Postfix-style virtual domains.
Details and examples are given in the revised virtual manual page.
- With Sendmail-style virtual domains, local users/aliases/mailing
lists are visible as localname@virtual.domain. This is convenient
if you want to host mailing lists under virtual domains.
- With Postfix-style virtual domains, local users/aliases/mailing
lists are not visible as localname@virtual.domain. Each virtual
domain has its own separate name space.
More general "soft bounce" feature. Specify "soft_bounce = yes"
in main.cf to prevent the SMTP server from bouncing mail while you
are testing configurations. Until this release the SMTP server was
not aware of soft bounces.
This one has been pending for around two months because
it installs root suid files. The port strips these out
by default, and pkg/SECURITY has details on if they need
to be reenabled. qmail at least doesnt need it, others can
probably be configured to not.
(naddy@ and avsm@ discussed this)
--
maildrop is a replacement for your local mail delivery agent. It
reads a mail message from standard input, then delivers the message
to your mailbox. maildrop knows how to deliver mail to mbox-style
mailboxes, and maildirs.
maildrop will optionally read instructions from a file, which
describes how to filter incoming mail. Instructions can be provided
having mail delivered to alternate mailboxes, or forwarded somewhere
else. Unlike procmail, maildrop uses a structured filtering language.
maildrop is written in C++, and is significantly larger than procmail
in compiled form. However, it uses resources much more efficiently.
Unlike procmail, maildrop will not read a 10 megabyte mail message
into memory. Large messages are saved in a temporary file, and are
filtered from the temporary file.
(notable changes: better locking, improved RC scripts, THREAD semantics
updated to latest IETF draft, unicode support, bug fixes)
- bump NEED_VERSION, MAINTAINER real name added
- regenerate RC patch
- PLIST tweaked to not delete libexec/authlib, which is being
used by other applications now (e.g. vmailmgr)
