2.2 2009-06-27 Sam Varshavchik * all: gcc 4.4 fixes 2.1 2009-05-10 Sam Varshavchik * Documentation refresh. 2008-07-26 Mr. Sam * maildrop/testsuite: Put additional stuff into testsuite * maildrop/reformail.C (add_messageid): Make generated Message-ID: field longer. * maildrop/deliver.C (delivery): If child process did not fully consume stdin, but terminated with a zero exit status, ignore SIGPIPE. * maildrop/reformail.C (extract_headers): If stdin is seekable, don't waste time on discarding stdin's content. 2007-07-26 Mr. Sam * GPL 3. 2007-07-04 Mr. Sam * Makefile.am (EXTRA_DIST): Drop automake fixups -- can't maintain them any more. 2.0.4 2007-04-05 Mr. Sam * Update man pages and documentation to Docbook XML V4.4 2007-03-31 Mr. Sam * Makefile.am (uninstall-maildrop): Include the makedat script in the maildrop package (the man page is already included ). 2007-02-25 Kurt Roeckx * Clean up configure scripts 2.0.3 2006-10-01 Josip Rodin * maildrop: configure option to make courier-authlib authentication optional; -a option to maildrop. 2006-09-19 Josip Rodin * maildirmake: Clarify some error messages. * maildir/maildirmake.sgml: Documentation fixup. * maildrop/maildropex.sgml: Documentation fixup. 2006-09-19 Mr. Sam * liblock/lockmail.c (main): Save the hide of some knucklehead who changed the ownership and permissions of how lockmail gets installed by my Makefile. Max Vozeler via Debian's maildrop maintainer. 2006-09-17 Mr. Sam * maildrop/main.C (run): -f ""? I really mean it. 2006-09-05 Josip Rodin * maildrop/dotlock.C (attemptlock): Clean up some error messages. 2006-09-05 Mr. Sam * deliverquota: messages created by deliverquota will use the umask setting. 2.0.2 2006-02-19 Mr. Sam * Makefile/configure: upgrade libtool/autoconf/automake toolchain. 2006-01-21 Mr. Sam * rfc822/rfc2047.c (encodebase64): Fix compiler warning. * rfc822/rfc822.c (parseaddr): Ditto. 2005-11-15 Mr. Sam * rfc2045/rfc2045rewrite.c: Cleanup. Remove duplicate quoted-printable implementation, use one in rfc822/encode.c * gpglib/gpg.c: Ditto. * rfc822/encode.c (quoted_printable): encode spaces that precede a newline. 2.0.1 2005-09-23 Mr. Sam * configure.in: Look for pcre/pcre.h if pcre is not installed. maildir: skip parts of make check if libpcre is not installed (used by other courier packages). 2005-09-21 Mr. Sam * maildir/Makefile.am (testmaildirfilter_LDADD): The 2005-09-07 patch was not included in the 2.0.0 build :-( 2.0.0 2005-09-07 Mr. Sam * maildir/Makefile.am (testmaildirfilter_LDADD): Move -lpcre to LDADD, from LDFLAGS. 2005-08-29 Mr. Sam * maildrop/search.C: Use PCRE (http://www.pcre.org) for mattern matching. + Most visible change is a different syntax for subexpression matching, using (...). MATCH2 becomes MATCH1, MATCH3 becomes MATCH2, etc... + "w" account option dropped. + During a transitional period, setting MAILDROP_OLD_REGEXP reverts to the old pattern matching engine. 2005-08-04 Mr. Sam * maildrop/mailbot.c (check_dsn): Do not autoreply to messages with an Auto-Submitted: header, unless it's contents are "no". (main): Add Auto-Submitted: auto-replied. 2005-06-18 Andres Salomon * Prefer /var/mail to /var/spool/mail, update docs accordingly. 2005-06-11 Mr. Sam * COPYING.GPL: Update FSF mailing address. 1.8.1 2005-05-09 Mr. Sam * maildrop/main.C (find_in_authlib): Exit with TEMPFAIL if temporary error indication from authlib. 2005-04-03 Mr. Sam * maildrop/maildropfilter.sgml: Explicitly document the | character. 2005-02-26 Mr. Sam * maildrop.spec.in (BuildPreReq): Fix SPEC file. 2005-01-27 Andres Salomon * maildrop/main.C (tempfail): More descriptive error messages when permissions check fails. 2005-01-27 Andres Salomon * rfc2045/reformime.sgml: Fix typo. 1.8.0 2004-11-29 Dmitry Lebkov * maildrop/main.C (find_in_authlib): Fix the "service" parameter in the authentication request, so that the correct attribute is read for the default maildir setting. 2004-11-04 Mr. Sam * maildrop: remove maildrop's mysql and ldap modules, replace with Courier Authentication Library. 2004-09-07 Mr. Sam * makedat/configure.in: Make build without db/gdbm work again. 1.7.0 2004-07-25 Mr. Sam * Makefile.am: Moved some man pages to more appropriate man sections. * configure.in: Default to enabling maildirquota support. 2004-06-07 Jeff Williams * mdmysql.C: Specify multiple mysql servers for fallback purposes via a comma-separated list. 2004-06-07 John Morrissey * main.C: Fixa segfault in maildrop if the LDAP or MySQL backend doesn't return a maildir and the user does not have a quota configured. * mdldap.C, mdmysql.C: Add default_quota directives to the LDAP and MySQL backend configurations, which will apply to any LDAP/MySQL users that don't have an explicit quota defined. 2004-06-06 Mr. Sam * rfc2045/rfc2045.h: Clean up and re-factor out MIME header parsing into a new function: rfc2045_parse_mime_header. 2004-05-19 Mr. Sam * maildir/maildirquota.c (do_deliver_warning): Make quota warning message work correctly with NFS. (do_maildir_openquotafile): Make quota calculations 64bit-safe (based on patch from Michael Kefeder ). 2004-04-24 Mr. Sam * maildrop/recipenode.C (Evaluate): Do not trap the exit statement within an exception {} block. exit will now really exit. 2004-03-13 Flavio Stanchina * rfc2045/reformime.c (extract_pipe): Program invoked by reformime -X must exit with zero exit status. A non-zero exit status terminates reformime. reformime's exist status will be 20+child process's exit status. 2004-03-13 Mr. Sam * Resync against the Courier tree. 2004-01-31 Tony Earnshaw * README.postfix: Additional info. 2004-01-14 Courier User * VAR="" does not remove the variable. New unset command does that. 2004-01-14 Troy Benjegerdes * maildrop/maildir.C: AFS patch - rename if link fails due to EXDEV 1.6.3 2003-10-15 Filipe Brandenburger * message.C (Init): If compiled with CRLF_TERM, account for CRs in the message size. 2003-10-10 Dmitry Lebkov * maildrop/mdldapconfig.c (get_ldap_config): Allow comments in ldap config file. * maildrop/mdmysqlconfig.c (get_mysql_config): Allow comments in mysql config file. Remove redundant mailstatus field. 1.6.2 2003-09-29 Mr. Sam * maildrop/mio.C: Cleanup. Drop some dead code. 2003-09-25 Mr. Sam * bdbobj/bdbobj.c (bdbobj_open): Fix dbf_open call for db 3.x 2003-09-21 Mr. Sam * userdb/makeuserdb.in: Make sure makeuserdb emits a trailing newline after each processed file. 1.6.1 2003-09-07 Mr. Sam * maildrop/main.C (nouser): Really use EX_NOUSER for undefined recipients. 1.6.0 2003-08-09 Mr. Sam * maildrop/main.C (nouser): Use EX_NOUSER for undefined virtual recipients. * maildrop/maildir.C (MaildirSave): Use KEYWORDS to initialize keywords for a maildir message. * CVS Refresh: * + Maildir keyword support. 2003-06-23 Mr. Sam * maildrop/main.C (find_in_ldap): Fix crash if ldap is enabled but ldapconfig is not installed. 1.5.3 2003-04-29 Mr. Sam * Replace U+0x00A0 in SGML documentation with spaces. 2003-04-21 Mr. Sam * Updated toolchain to automake 1.6.3, autoconf 2.57, libtool 1.4.3, gettext 0.11.4, new Docbook style sheets. * bdbobj/bdbobj2.c (bdbobj_nextkey): Eliminate 0-length malloc. 2003-04-12 Mr. Sam * All beta and releases will now be signed by http://www.courier-mta.org/KEYS.bin 2003-04-09 Mr. Sam + CVS refresh: * autoconf 2.57 fixes. * rfc2045/rfc2045.c (content_location): Plug a leak. * maildir/maildirpurgetmp.c (maildir_purge): Fix maildir_purge("."); * rfc2047.c (rfc2047_encode_callback): Fix MIME encoding of "_". * maildrop/maildropex.sgml: Fix typo. * rfc2045/configure.in: rename config.h to rfc2045_config.h * rfc2045/reformime.c (read_message): Use rfc2045_parse_partial() to properly size-up content without trailing newlines. * rfc2045/rfc2646create.c (rfc2646create_free): Emit the trailing newline. * rfc2045/pcpd.c (start): Use SA_NOCLDWAIT, if blessed by configure. * maildir/maildirwatch.c: Fix timeout. * rfc2045/rfc2045encode.c: clean up base64/qp encoding. 2003-04-09 Jeff Williams * maildrop/main.C (run): Code cleanup. 1.5.2 2003-01-25 Mr. Sam * maildir(5) man page added. Finalized new maildir creation code that uses both dev_t and ino_t as part of the filename. 2003-01-19 Mr. Sam * maildir/maildircreateh.c (maildir_tmpcreate_fd): Add openmode to struct maildir_tmpcreate_info * maildrop/maildir.C (MaildirOpen): Use new maildir creation code. 1.5.1 2002-12-29 Mr. Sam * New docbook support scripts/css for docbook-generated man pages. 2002-12-23 Mr. Sam * rfc2047.c (rfc2047_encode_callback): Fix hang on locales where isspace(U+0x00A0) is true. 2002-11-23 John Morrissey * Add -w option to maildrop by moving quota warning code from deliverquota to libmaildir.a, and reusing it. 1.5.0 2002-10-08 Mr. Sam * maildrop/maildropfilter.sgml (ADDRLIST): Typo fix. 2002-10-07 Mr. Sam * Major toolchain upgrade - gcc 3.2, automake 1.6, autoconf 2.53, libtool 1.4. 2002-10-02 Mr. Sam * maildrop/maildir.C: new configure switch --with-dirsync 2002-09-20 Mr. Sam * reformime, makemime: implemented RFC 2231-parsing of Content-Type: and Content-Disposition: headers. Dropped rfc2045_dispositioninfo. Access rfc2045.content_disposition directly, and use the rfc2231 functions to access the attributes. 2002-09-05 Mr. Sam * Replace dotlock with lockmail. 2002-08-21 Mr. Sam * maildrop/maildir.C (MaildirOpen): Clean up temp file if delivery to maildir goes over quota. 1.4.0 2002-06-12 Mr. Sam * maildir/maildirquota.c (do_maildir_openquotafile): Fix quotas on FreeBSD (fcntl("/dev/null", F_SETFL) doesn't work on FreeBSD) * maildrop/configure.in: do not use qmail-inject for SENDMAIL_DEF (problems with the -t flag used by sqwebmail's mail filter). 2002-06-09 Mr. Sam * numlib/strofft.c: off_t may be negative. * +++ maildirquota API update +++ + allows documented way to change the set quota on a maildir + major internal cleanup, established a sane API library External changes: + quota no longer set by deliverquota or MAILDIRQUOTA, new -q option to maildirmake. Both deliverquota, maildrop, and Courier now read the maildirsize no matter what, and observe the quota + maildirmake and deliverquota now installed by the Courier-IMAP, maildrop, and sqwebmail standalone builds. + updated README.maildirquota, and man pages to reflect all these changes. 2002-06-09 Christian Kratzer * maildrop/mdldap.c: Check ldap_get_values() exit code. 2002-05-16 Mr. Sam * maildrop/rematchmsg.C (SetCurrentPos): Fix an obscure bug that can sometimes result in an invalid seek error. 1.3.9 2002-04-24 Mr. Sam * maildrop/filter.C (xfilter): Set O_NDELAY on file descriptors for xfilter() since select() only works correctly on non-blocking fds. 2002-04-08 Mr. Sam * maildrop/formatmbox.C (GetFromLine): Do not write a newline before every From_ line... * maildrop/deliver.C (delivery): ... only for 2nd and subsequent msgs. 2002-03-09 Mr. Sam * rfc2047.c (rfc2047_encode_callback): Fix MIME-encoding of spaces. 2002-03-04 Mr. Sam * rfc822.c (rfc822_prname_orlist): Dequote quoted-strings. 1.3.8 2002-03-18 Mr. Sam * rfc2045/reformime: Fix handling of unencoded nulls in text/plain content. 2002-02-27 Josip Rodin * Makefile.am cleanup. 2002-03-01 Mr. Sam * configure/makefile script update for autoconf 2.52/automake 1.5 2002-02-15 Mr. Sam * rfc2045/reformime.sgml: Documented the -m and -D options. 2002-02-02 Mr. Sam * Update README.postfix 2002-01-27 Mr. Sam * userdb/configure.in: Fix typo. 2002-01-25 Mr. Sam * rfc2045/rfc2045.c (doline): Fix incorrect calculation of the end of a multipart MIME section that's inside another multipart MIME section. 2002-01-09 Mr. Sam * maildir/maildirfiltertypelist.h: Fix typo. 1.3.7 2001-12-23 Mr. Sam * Converted makemime, rfc2045, rfc822, makedat man pages to Docbook. 2001-12-22 Mr. Sam * Converted dotlock, mailbot, reformail, reformime man pages to Docbook. 2001-12-21 Mr. Sam * Converted maildrop, maildropfilter, maildropgdbm, maildropex man pages to Docbook. 2001-12-08 Mr. Sam * Convert maildir documentation to SGML docbook. 2001-12-04 "Bjoern A. Zeeb" * Fix mysql support. 1.3.6 2001-11-25 Bjoern A. Zeeb * Updates to mysql support. Note - patch did not apply cleanly, there were some whitespace differences, so take care. 2001-11-25 Mr. Sam * reformime: Loosen up the parsing of the content-type header. Strict parsing allowed viruses to slip through using malformed content-type headers which still got picked up by Microsoft's crapware which does not strictly parse the MIME headers. 2001-11-24 Mr. Sam * Convert userdb documentation to SGML docbook (more to follow). 2001-11-01 Mr. Sam * rfc822/rfc2047.c - case insensitive charset comparison * userdb: initialize PATH variable 1.3.5 2001-09-30 Mr. Sam * Drop install setuid. * Add UMASK variable, that sets the permissions on new mailboxes or messages. Hence, drop MAILBOX_MODE from configure script. * Resync with the Courier tree. Changes: maildir/maildirmake.c (add): Explicitly fseek() to start of file, for system where fopen("a+") initially positions to EOF. Problem noted by Vojtech Karny authlib/authuserdbpwd.c (auth_userdb_passwd): Fix trashed pointer dereference. Problem noted by James Knight Updated configure.in/Makefile.am to automake 1.4p5 and autoconf 2.13 2001-08-02 Mr. Sam * Resync with the Courier tree. Changes: Net::CIDR support in makedat (N/A for maildrop); fixes for maildirfilter filter recipe generation (N/A for maildrop); fix a division by zero due to the quota being set to 0; removed incorrect documentation from maildirfilter man page. 1.3.4 2001-06-25 Mr. Sam * Disable MSIE smart tags in all html files 2001-06-24 Dmitry Lebkov * Added experimental MySQL support. 2001-06-24 Mr. Sam * userdb: Adjusted makeuserdb imported from Courier build, to support Courier 0.35 * maildrop/recipenode.C (Evaluate): Allow exception { } to pass through regular mail delivery terminations. 1.3.3 2001-06-06 Mr. Sam * liblock/lockdaemon.c: fix several improper tests for failed fopen(). 2001-05-26 Mr. Sam * reformime: strip leading/trailing spaces from attachment filename. 2001-05-04 Mr. Sam * Created mailbot(1). 2001-04-23 Mr. Sam * --- Merge from Courier tree --- * rfc2045/reformime.c (main): Allow both -i and -x at the same time. * maildrop/main.C (run): Disable pw lookup for delivery mode in the Courier build -- we'll import it from the environment --- This is an FYI - this should not affect the maildrop build. * Global search and replace of certain C++ include files, for compatibility with ISO C++: -> -> -> -> -> -> -> -> -> -> * rfc822.c (rfc822t_alloc): Explicitly cast arg to (void *). * Cosmetic fixes. Replace // with /* */ comments in some .c files and replace return of void datatype with an explicit return. Other misc stuff too. * rfc2045/rfc2045.c (rfc2045_mimepos): Fix a long-time glitch where a garbled message with no body will have its headers logically placed in the body section, and the supposed headers will be NULL -- this was a benign artifact of the parsing logic. * rfc2045/reformime.c, submit.C: Reject ambigous nested MIME boundary delimiters (suggestion by leonid@latte.harvard.edu). * Added /usr/local/bin to AC_PATH macros in all configure.in scripts. * maildrop/main.C (run): Disable pw lookup for delivery mode in the Courier build -- we'll import it from the environment. Import MAILDROPDEFAULT from environment as DEFAULT. This should not affect the standalone maildrop build. 2001-04-11 Mr. Sam * maildrop/configure.in (LIBLDAP): Try to probe whether -lsocket and -lnsl is required to link with libldap. * README.postfix (maildrop_destination_recipient_limit): Added a note about a potential misconfiguration. * rfc2045/reformime.c: Added -V option to reformime which validates MIME message formatting, and reports several common errors. * Added /usr/local/bin to AC_PATH macros in all configure.in scripts. 2001-03-11 Mr. Sam * reformime: add the hostname to the manufactured MIME boundary delimiter, in order to generate more noise; skip over multipart/signed content; prefer appending Content-Transfer-Encoding: to the individual content sections, instead of multipart sections. tweak arg to putc, in order to prevent a fake EOF indication? 1.3.1 2001-03-03 Mr. Sam * maildrop/configure.in: Changed mailing list address. 1.3.0 2001-01-20 Mr. Sam * Applied LDAP patch (Terry Katz) 2001-01-13 Mr. Sam * maildrop/re.C (parsechar): Actually made octal notation work. 2000-12-16 Mr. Sam * Added setlocale() to eliminate some unexpected surprises in glibc. 2000-11-26 Mr. Sam * Replaced rfc822t_alloc() with rfc822t_alloc_new(). * V1.2.2 - Adjust truncation in reformiem to truncate to the last 32 characters in a long filename (to preserve any filename extension). * V1.2.1 - A small patch to reformime that truncates long MIME filenames to 32 characters. * V1.2 - Switched installation layout to GNU layout. Packaged development libraries. reformime -x option now MIME decodes 8-bit filenames (then promptly strips 8bit characters :-) ). Change permissions that files in the maildir are created to 0644 from 0600, in order to support delivery to shared folders. Since maildirmake, by default, uses mode 0700 for creating standard, non-shared, maildirs, there is no issue with private folders. The maildrop package also now includes installation of "development" libraries. * V1.1 - Added makemime utility. Made --disable-tempdir option to be the default. * V1.0 - Berkeley DB 3.0 support. Patches reformime to avoid clobbering of existing files. * V0.99.2 - added README.postfix. Removed default permissions of g+rw for mbox files created on systems with spool directory that does not have a sticky bit set -- potential exploit. * V0.99.1 - additional fixes to the makefile and configuration scripts. RPM spec file upgraded to RPM 3.0. Some additional sanity checks when delivering to maildirs (checks for rogue soft links -- needed to support delivery to sharable maildirs). maildirmake update - creates sharable maildirs. Added hooks for integrating maildrop into Courier. Added -m to reformime (make MIME digests). Added trusted groups, to complement "trusted users" concept. * V0.76 - minor compilation warning fix that was accidentally left out of 0.75. Part of the cleanup: legacy code in maildirmake removed. maildirmake should NO LONGER be installed with any suid/gid bits set. Added vchkpw2userdb script. Arg to -M will convert all periods and slashes to :s, instead of complaining. Moved setprocgroup call. * V0.75 - new installation layout - will install into /usr/local/lib/maildrop/minor fixes to configuration scripts. Minor typos in userdb. Bug fix: exception statement will now trap maildir quota errors. AIX fixes. * V0.74- fix compilation errors for SuSE 6.0. Qmail bug fix. userdb update. * V0.73 - bug fix in getaddr()/hasaddr() functions, and reformail -r option. * V0.72 - reformime enhancement/update. Maildir support update. * V0.71 - a maintenance release. Patches for AIX and AFS support. Updates to documentation. Internal cleanup of the source code directory layout, which will allow me to include maildrop as parts of other projects. Fixed a bug in the reformime utility. * V0.70 - option to enable soft enforcement of maildir quotas, see README.maildirquota in the maildir subdirectory. Virtual account support. Renamed makegdbm to makedat. Removed installation option to gzip manual pages -- too messy. Let target platform packagers/porters worry about it. to and cc commands that pipe the message to an external process will now set the EXITCODE variable to the exit code of the external process. External processes that terminate with a non-zero exit code will NOT automatically cause maildrop to terminate with the exit code of 75. The exit code will be saved in the EXITCODE variable. If the delivery command was to, maildrop simply terminates with the same exit code. If the delivery command was cc, maildrop continues after initializing EXITCODE. * V0.65 - option to compile Berkeley DB library, instead of GDBM. Added the import keyword. Some cleanup of HTML documentation. * V0.64 - reformime fix - handle systems with broken pipe fseeks semantics. rfc822 library sync. Standardized names of some legacy .h files. Red Hat RPMs changed to install a tiny sh/bash/csh login script (from maildroptips) to purge $HOME/.tmp. makegdbm can now read from standard input. Some obscure fixes to rfc822 functions. Moved reformime to rfc2045 subpackage - it belongs there, and can be shared by other projects. * V0.63 - maintenance. Minor enhancements and bug fixes to the reformime utility. reformime can now convert 8-bit messages to or from quoted-printable encoding. reformime can now also add missing MIME headers to a message. * V0.62 - array out of bounds bug fix in rfc822.c. Some additional options to configure to specify various directories. Option to configure to use /usr/local/etc instead of /etc. * V0.61(prerelease) - rfc822 library sync. Added reformime standalone utility. Added support for GDBM database files. Because GDBM support adds significant amount of code to maildrop, GDBM support can be optionally disabled during installation. Added the time function. Changed how maildrop automatically converts results of floating point mathematical operation back into text - should not affect any existing filters. * V0.60 - no changes to the main maildrop code from version 0.55c, except for cosmetic changes to some shared modules in order to accomodate the new reformime utility. The main maildrop code appears to be stable. Edited the documentation, and changed the flags that the RPM is built with. NEW: Experimental set of MIME functions, which are implemented as a separate program for now. The reformime program can be used to decode the MIME structure of a message, and extract different parts of it. At some point later, this functionality will be added as native functions in the maildrop filtering language. See reformime.html for more information. * V0.55c - BUG FIX: maildrop would botch the situation where it had problems creating or writing to a temporary file. Fixed error handling so this condition correctly results in deferred mail. Added some sendmail-related notes to INSTALL. Added additional punctuation characters recognized by the escape() function. The chance that this would break existing scripts is very remote, but possible, however the additional escaped punctuation would allow the function to be used to hack-proof shell commands. * V0.55b - enhancement: an optional parameter to configure, --enable-syslog, which will enable logging of fatal errors to syslog. sendmail discards standard error, making diagnosis of maildrop problems difficult. An optional switch to configure will have maildrop log all fatal error to syslog. Fixed core dump if reformail is given an invalid switch: '-f'. * V0.55a - fixed some miscellaneous glitches in the configuration script. Fixed potential security problem on some platform with reformail incorrectly being installed with setuid privileges. Only cosmetic changes to the main maildrop program: made some error messages more descriptive; maildrop will now attempt to create a process group upon startup and upon termination maildrop will send a SIGHUP signal to its process group, hopefully terminating any child processes. No bug fixes are known, or have been reported. * V0.55 - added HOSTNAME and FROM environment variables. Added -f option. Added support for /etc/maildroprcs - see maildrop(1). Fixed obscure bug that can trash a file descriptor. * V0.54b - Changed auto-configuration logic for enabling dotlocks. If the configure script detects that the system mailbox directly does NOT have the sticky bit set, dot-locks are disabled by default. --enable-use-dotlock option to configure can override that. Added --enable-keep-fromline option to preserve the original From_ line address of messages. Note that the default value of this option may change maildrop's behavior from previous versions. See INSTALL for additional information. Documented some additional options to configure that were actually implemented in a previous version. Fixed error in select() logic that may cause the backtick command to fail in some situations. * V0.54a - miscellaneous fixes. Changed the hasaddr() function to look at Resent-To: and Resent-Cc: headers. Default SHELL to /bin/sh if the shell is not specified in /etc/passwd. FreeBSD does not support lockf() on /dev/null - lockf() will no longer cause a fatal error if it fails on a character or a block special file. Fixed bug in configure script regarding failed initialization of --enable-restrict-trusted flag. * V0.54 - edited the documentation. Added support for VPATH builds using automake - suggested by Harlan Stenn . Major rework of the configuration code. Changed all #define-s in config.h to use the configure script. * V0.51c - Fixed the subtraction operator bug. Added sendmail documentation. * V0.51b - Fixed compilation error for BSD. Fixed spurious "invalid directory permission" error if $HOME/.mailfilters does not exist in special embedded mode - maildrop will simply indicate quiet acceptance. * V0.51 - ported to RedHat 5.1, added /etc/maildroprc global filter file. * V0.50 - first public release.