release_notes

早期freebsd实现

	Fix a problem that could cause a core dump if the input sequence
		had (or somehow acquired) a \231 character.
	Make sure that route-addrs always have <angle brackets> around
		them in non-SMTP envelopes (SMTP envelopes already do
		this properly).
	Avoid wierd headers on unbalanced punctuation of the form:
		``Joe User <user)'' -- this caused reference to the
		null macro.  Fix from Rick McCarty of IO.COM.
	Fix a problem that caused an alias "user: [e-mail]" to
		not have the QNOTREMOTE bit set; this caused configs
		to act as if FEATURE(notsticky) was defined even when
		it was not.  The effect of the problem was to make it
		very hard to to set up satellite sites that had a few
		local accounts, with everything else forwarded to a
		corporate hub.  Reported by Detlef Drewanz of the
		University of Rostock and Mark Frost of NCD.
	Change queuing to not call rulesets 3, {1 or 2}, 4 on header
		addresses.  This is more efficient (fewer name server
		calls) and fixes certain unusual configurations, such
		as those that have ruleset 4 do something that is
		non-idempotent unless a mailer-specific ruleset did
		something else.  Problem reported by Brian J. Coan
		of the Institute for Global Communications.
	Fix the "obsolete argument" routine in main to better understand
		new arguments.  For example, if you used ``sendmail
		-C config -v -q'' it would choke on the -q because
		the -C would stop looking for old-format arguments.
	Fix the code that was intended to allow two users to forward their
		mail to the same program and have them appear unique.
	Portability fixes for:
		SCO UNIX from Murray Kucherawy.
		SCO Open Server 3.2v4 from Philippe Brand.
		System V Release 4 from Rick Ellis and others.
		OSF/1 from Steve Campbell.
		DG/UX from Ben Mesander of the USGS and Bryan Curnutt
			of Stoner Associates.
		Motorola SysV88 from Kevin Johnson of Motorola.
		Solaris 2.3 from Casper H.S. Dik of the University
			of Amsterdam and John Caruso of University
			of Maryland.
		FreeBSD from Ollivier Robert.
		NetBSD from Adam Glass.
		TitanOS from Kate Hedstrom of Rutgers University.
		Irix from Bryan Curnutt.
		Dynix from Jim Davis of the University of Arizona.
		RISC/os.
		Linux from John Kennedy of California State University
			at Chico.
		Solaris 2.x from Tony Boner of the U.S. Air Force.
		NEXTSTEP 3.x from Vince DeMarco.
		HP-UX from various people.  NOTA BENE:  the location
			of the config file has moved to /usr/lib
			to match the HP-UX version of sendmail.
	CONFIG: Don't do any recipient rewriting on relay mailer;
		since this is intended only for internal use, the
		usual RFC 821/822/1123 rules can be relaxed.  The
		main point of this is to avoid munging (ugh) UUCP
		addresses when relaying internally.
	CONFIG: fix typo in mailer/uucp.m4 that mutilates list:;
		syntax addresses delivered via UUCP.  Solution
		provided by Peter Wemm.
	CONFIG: fix thumb-fumble in default UUCP relaying in ruleset
		zero; it caused double @ signs in addresses.  From
		Irving Reid of the University of Toronto.
	CONFIG: Portability fixes for SCO Unix 3.2 with TCP/IP 1.2.1
		from Markku Toijala of ICL Personal Systems Oy.
	CONFIG: Add trailing "." on pseudo-domains for consistency;
		this fixes a problem (noted by Al Whaley of Sunnyside)
		that made it hard to recognize your own pseudodomain
		names.
	CONFIG: catch "@host" syntax errors (i.e., null local-parts)
		rather than letting them get "local configuration
		error"s.  Problem noted by John Gardiner Myers.
	CONFIG: add uucp-uudom mailer variant, based on code posted
		by Spider Boardman <[e-mail]>; this
		has uucp-dom semantics but old UUCP syntax.  This
		also permits "uucp-old" as an alias for "uucp" and
		"uucp-new" as a synonym for "suucp" for consistency.
	CONFIG: add POP mailer support (from Kimmo Suominen
		<[e-mail]>).
	CONFIG: drop CSNET_RELAY support -- CSNET is long gone.
	CONFIG: fix bug caused with domain literal addresses (e.g.,
		``[128.32.131.12]'') when FEATURE(allmasquerade)
		was set; it would get an additional @masquerade.host
		added to the address.  Problem noted by Peter Wan
		of Georgia Tech.
	CONFIG: make sure that the local UUCP name is in $=w.  From
		Jim Murray of Stratus.
	CONFIG: changes to UUCP rewriting to simulate IDA-style "V"
		mailer flag.  Briefly, if you are sending to host
		"foo", then it rewrites "foo!...!baz" to "...!baz",
		"foo!baz" remains "foo!baz", and anything else has
		the local name prepended.
	CONFIG: portability fixes for HP-UX.
	DOC: several minor problems fixed in the Install & Op Guide.
	MAKEMAP: fix core dump problem on lines that are too long or
		which lack newline.  From Mark Delany.
	MAILSTATS: print sums of columns (total messages & kbytes
		in and out of the system).  From Tom Ferrin of UC
		San Francisco Computer Graphics Lab.
	SIGNIFICANT USER- OR SYSAD-VISIBLE CHANGES:
		On HP-UX, /etc/sendmail.cf has been moved to
			/usr/lib/sendmail.cf to match HP sendmail.
		Permissions have been tightened up on world-writable
			:include: files and accounts that have shells
			that are not listed in /etc/shells.  This may
			cause some .forward files that have worked
			before to start failing.
		SIGUSR1 dumps some state to the log.
	NEW FILES:
		src/Makefile.DGUX
		src/Makefile.Dynix
		src/Makefile.FreeBSD
		src/Makefile.Mach386
		src/Makefile.NetBSD
		src/Makefile.RISCos
		src/Makefile.SCO
		src/Makefile.SVR4
		src/Makefile.Titan
		cf/mailer/pop.m4
		cf/ostype/bsdi1.0.m4
		cf/ostype/dgux.m4
		cf/ostype/dynix3.2.m4
		cf/ostype/sco3.2.m4
		makemap/Makefile.dist
		praliases/Makefile.dist

8.6.4/8.6.4	93/10/31
	Repair core-dump problem (write to read-only memory segment)
		if you fall back to the return-to-Postmaster case in
		savemail.  Problem reported by Richard Liu.
	Immediately diagnose bogus sender addresses in SMTP.  This
		makes quite certain that crackers can't use this
		class of attack.
	Reliability Fix:  check return value from fclose() and fsync()
		in a few critical places.
	Minor problem in initsys() that reversed a condition for
		redirecting the output channel on queue runs.  It's
		not clear this code even does anything.  From Eric
		Wassenaar of the Dutch National Institute for Nuclear
		and High-Energy Physics.
	Fix some problems that caused queue runs to do "too much work",
		such as double-reading the Errors-To: header.  From
		Eric Wassenaar.
	Error messages on writing the temporary file (including the
		data file) were getting suppressed in SMTP -- this
		fix causes them to be properly reported.  From Eric
		Wassenaar.
	Some changes to support AF_UNIX sockets -- this will only
		really become relevant in the next release, but some
		people need it for local patches.  From Michael
		Corrigan of UC San Diego.
	Use dynamically allocated memory (instead of static buffers)
		for macros defined in initsys() and settime(); since
		these can have different values depending on which
		envelope they are in.  From Eric Wassenaar.
	Improve logging to show ctladdr on to= logging; this tells you
		what uid/gid processes ran as.
	Fix a problem that caused error messages to be discarded if
		the sender address was unparseable for some reason;
		this was supposed to fall back to the "return to
		postmaster" case.
	Improve aliaswait backoff algorithm.
	Portability patches for Linux (8.6.3 required another header
		file) (from Karl London) and SCO UNIX.
	CONFIG: patch prog mailer to not strip host name off of envelope
		addresses (so that it matches local again).  From
		Christopher Davis.
	CONFIG: change uucp-dom mailer so that "<>" translates to $n;
		this prevents uux from seeing lines with null names like
		``From   Sat Oct 30 14:55:31 1993''.  From Motonori
		Nakamura of Kyoto University.
	CONFIG: handle <list:;> syntax correctly.  This isn't legal, but
		it shouldn't fail miserably.  From Motonori Nakamura.

8.6.3/8.6.3	93/10/24
	IMPORTANT FIX: Fix several problems that caused open files to
		be "lost" during queue runs; this overflowed the open
		file table on large runs.  An assumption that fdopen
		always succeeds sometimes resulted in core dumps when
		this happens; sometimes the message is delivered twice,
		sometimes (probably) infinite times.  This problem in
		various form was reported by P{r (Pell) Emanuelsson and
		Robert Campbell of U.C. Berkeley.
	Special diagnosis of EMFILE error conditions -- it now prints
		the known open file descriptors so you can figure out
		what is consuming so much resources.
	Fix a couple of problems caused by early address parsing
		errors -- one caused it to return a "this is only a
		warning" when it really wasn't, and the other started
		parsing through a random pointer.  The first was
		noted by Eric Wassenaar.
	Fix an infinite loop problem caused by null components in the
		host signature.  Problem noted by Jan Sorensen.
	Be sure to reset the "current date" when sending an error
		message -- PostMasterCopy messages were being sent
		with an old Date: header.
	Fix a problem that caused duplicated mail when sendmail was
		(1) compiled without HASFLOCK, (2) you are sending to
		an alias that has an owner-* alias, (3) you execute
		sendmail with -t flag, (4) you run in -odb mode, and
		(5) the sender specifies both the alias name and
		another alias [i.e., the envelope is split], then
		duplicate messages are sent.  The problem description
		and one-line fix are from Motonori Nakamura of Kyoto
		University.
	Avoid a problem that causes error messages to be discarded
		in some cases -- this was the result of a "fix" to
		avoid duplicate error messages, but two are better
		than zero.  Reported by Tim Rylance.
	Fix a minor botch in checkfd012() -- fix from Dave Hill of
		Computervision R&D Ltd.
	Remove "X-Authentication-Warning: <user> set sender to <address>
		using -f" entirely -- it is far too eager to include
		this, and it is confusing folks.  I'll try to make it
		work "right" in 8.7.  Problem noted by Yoshitaka
		Tokugawa of dit Co., Ltd.
	Fix a race condition with the errno value in tick() and
		reapchild() -- this caused occasional misdiagnosis
		of problems.  Kyle Jones of UUNET helped this along.
	Repair rule loop-detection code.  From Michael Corrigan of
		U.C. San Diego.
	Fix a problem that caused sender domain addition (C mailer
		flag to be ignored if you use -odq or use -odb with
		a high load average.  Problem reported by Jim Murray
		of Stratus.
	Fix ident protocol on multi-homed machines.  It was not
		always using the correct interface.  Fix from J.R.
		Oldroyd of Opal.
	Previously, sendmail assumed that any SMTP greeting message
		that wasn't 2xx was a temporary failure -- it should
		only take 4xx as a temporary failure, and return a
		solid error message on anything else -- for example,
		to allow you to reject connections on a workstation
		that is MXed to a mail server.
	Portability enhancements for 386BSD/FreeBSD/NetBSD from
		Ollivier Robert.
	CONFIG: FEATURE(always_add_domain) didn't always add the domain;
		in particular, on local mail it modified the header sender
		but not the header recipient address(es).  Reported by
		Jeffrey Honig of Cornell University.  Also, strip
		any host from envelope recipient address(es), since
		local mailers don't understand host names -- this is
		to help mailertable entries.  From Christopher Davis.
	CONFIG: masquerading didn't apply to addresses that already
		had a domain.  This change replaces a local hostname
		by the masquerade name in the SMTP mailer (previously
		it only added the masquerade name if it didn't already
		have a domain name).  Several people complained about
		this.

8.6.2/8.6.2	93/10/15
	Put a "successful delivery" message in the transcript for
		addresses that get return-receipts.
	Put a prominent "this is only a warning" message in warning
		messages -- some people don't read carefully enough
		and end up sending the message several times.
	Include reason for temporary failure in the "warning" return
		message.  Currently, it just says "cannot send for
		four hours".
	Fix the "Original message received" time generated for
		returntosender messages.  It was previously listed as
		the current time.  Bug reported by Eric Hagberg of
		Cornell University Medical College.
	If there is an error when writing the body of a message,
		don't send the trailing dot and wait for a response