2.99.49 patch3 -- only full dump

[Matti Aarnio <mea@nic.funet.fi>]

Hello,

	I have finally made 2.99.49 patch3 available.
	It has a few new files in it; utils/Makefile, for example,
	and more importantly, a couple performance and security
	fixes.  Security by nulling routers/schedulers starters
	supplementary groups list.

	... plus a couple performance things that stem from experiments
	at vger.rutgers.edu, and reading one SunSoft book about Solaris
	performance tuning.

	This source dump has been at the  ftp.funet.fi  for a few
	hours, but it took me a while before I got around to test
	install at other than Linux systems, and of course that first
	dump had an error in "utils/Makefile.in"..
	(An extra "-c" at install.)

/Matti Aarnio <mea@nic.funet.fi>

Sun Jun 29 21:36:43 1997  Matti Aarnio  <mea@mea.tmt.tele.fi>

	* Makefile.in:
	    Version 2.99.49p3

	* configure.in, config.h.in, transports/libta/ctlopen.c,
	  transports/mailbox/mailbox.c, transports/sm/sm.c,
	  transports/smtp/smtp.c:
	    Configuration option:  --with-ta-mmap   which uses  mmap()
	    facility to map in pages of the message data.
	    At least at Solaris 2.x it is not advisable to use if you
	    want to have highest possible performance, because the
	    munmap() throws away ALL pages of the file from the system
	    memory, even when other users have those pages in use!
	    For that reason it is much better to rely on plain simple
	    read()/write()  behaviour that let buffer cache to exist.

	* configure.in:
	    Configuration option:  --without-fsync
	    Option that turns off (globally) the use  fsync()  anywhere
	    in the ZMailer.   System configurers can decide what is best
	    for their systems.  It does give definite edge at buffered
	    IO by not forceing every file modification to be commited
	    up to the disk.

	* smtpserver/rfc821scn.c:
	    Alteration at the treatment of "!" and "%" characters. Now
	    they are special, and are analyzed in more profound manner
	    within localpart analysis.


	* smtpserver/smtpchild.c:
	    Register, and analyze properly how many SMTP sessions are
	    currently active (non-reaped) from any given source IP
	    address.
	
	* transports/smtp/smtp.c:
	    Correction into notary-status-code pickup for ENHANCEDSTATUSCODES
	    mode.
	
	* libsh/testeval.c:  (+ several of  proto/cf/*.cf files)
	    New operators into the builtin 'test' function:  -nt, -ot, -ef
	    (file age comparators, and file equality comparator)

	* SiteConfig.in, router/rtsyslog.c, smtpserver/smtpserver.c,
	  transports/libta/tasyslog.c:
	    New ZENV entry:  SYSLOGFLG=
	    which can be used to turn off syslog() logging activity
	    at the  smtp-server/router/transport-agents

	* config.h.in, configure.in, router/router.c, scheduler/scheduler.c:
	    Check of  setgroups()  routine, and at both the router, and
	    the scheduler, use both to clean out the set of supplementary
	    groups the processes have.

	* include/hostenv.h:
	    Concise USE_ALLOCA/HAVE_ALLOCA defines

	* libident/identuser.c:
	    Be a bit more tolerant at what comes back as response
	    for the ident query.

	* libsh/interpret.c, router/functions.c:
	    A bit more smarts into quote containing string processing;
	    Especially when dequoteing string that contains only one
	    char: ' or " ...

	* proto/cf/i-routes.cf:
	    Accept incore database of form:   $MAILVAR/db/routes.zmsh
	
	* router/libdb/headers.c:
	    Allow   "Reply-To:" and "Resent-Reply-To:" to have value: "<>"
	    (sigh...)

	* scheduler/msgerror.c, transports/errormail/errormail.c,
	  transports/fuzzyalias/fuzzyalias.c, transports/mailbox/mailbox.c:
	    Stronger MIME-report boundary generator which isn't merely
	    stocastic, but very likely unique at the creation time.

	* smtpserver/policytest.c, smtpserver/policytest.h:
	    Move policy-database open out from database define
	    routine.

	* smtpserver/policytest.c:
	    - Study "rejectsource" at HELO/EHLO parameter check
	    - For the RCPT TO:<..> study also the full addresses
	      in addition to the domain part

	* smtpserver/smtpcmds.c, smtpserver/smtpserver.c:
	    - Print out the incoming HELO/EHLO parameter as is
	      into comment at  "rcvdfrom"  envelope header along
	      with many other bits of info.
	    - Change policy-rejection responses from:
	        553 5.1.8 ...
	      to:
		553 5.7.1 ...

	* ssl/ssl.c:
	    Conflicting routine name within the ssl.c program: basename()
	    ( Linux libc6 a.k.a. glibc-2.0.4 .. )

	* support/vacation/vacation.sh.in:
	    Modifications into 'vacation start' command behaviour.

	* transports/mailbox/mailbox.c:
	    Found a couple off odd situations where creation of files
	    into non-kosher location was allowed; partly corrected with
	    the purge of supplementary groups at the scheduler, partly
	    with a bit of new code.

	* transports/smtp/smtp.c:
	    Recognize (unknown) smtp response value 571 to be a sign of
	    policy based refusal.

	* utils/makendbm/ndbmlook.c:
	    At Debian systems including <errno.h> causes surprises at
	    parameters called 'errno' ... rename such parameters.