+THIS IS AN ALPHA VERSION OF SENDMAIL. DON'T EVEN THINK ABOUT USING IT
+IN A HEAVY PRODUCTION ENVIRONMENT. We've been running it (in various
+forms) at Berkeley for several months, but our environment is far from
+general. In particular, it hasn't been heavily tested for non-SMTP
+environments. The good news is that most of the changes have been
+Internet-related, and that has been tested.
+
+REPORT ANY BUGS to sendmail@CS.Berkeley.EDU.
+
+THIS IS COPYRIGHTED CODE. BY COMPILING AND RUNNING THIS CODE YOU AGREE
+to upgrade to the production release when it comes out. You understand
+that we hope this will be by March, but if there are serious problems
+it may be longer than that.
+
+PLEASE DO NOT MAKE THIS AVAILABLE ON PUBLIC FTP. Since it is still an
+early release, I'd prefer that people get copies directly from Berkeley
+to make certain that they have the most recent version. This isn't
+an attempt to limit access, just to make certain that everyone is able
+to keep up.
+
+You don't have to install mail.local to run the new version of sendmail.
+Many versions of /bin/mail take a "-d" flag or do local delivery already.
+In particular, mail.local is largely specific to 4.4 BSD, and will not
+be easy to compile elsewhere. It was written by Keith Bostic, not myself,
+and was not intended for the "general case".
+
+There are several related RFCs that you may wish to read -- they are
+available via anonymous FTP to several sites, including nic.ddn.mil
+(directory rfc), ftp.nisc.sri.com (rfc), nis.nsf.net (RFC),
+nisc.jvnc.net (rfc), venera.isi.edu (in-notes), and wuarchive.wustl.edu
+(info/rfc). They can also be retrieved via electronic mail by sending
+email to one of:
+
+ mail-server@nisc.sri.com
+ Put "send rfcNNN" in message body
+ nis-info@nis.nsf.net
+ Put "send RFCnnn.TXT-1" in message body
+ sendrfc@jvnc.net
+ Put "RFCnnn" as Subject: line
+
+Important RFCs for electronic mail are:
+
+ RFC821 SMTP protocol
+ RFC822 Mail header format
+ RFC974 MX routing
+ RFC976 UUCP mail format
+ RFC1123 Host requirements (modifies 821, 822, and 974)
+
+Other standards that may be of interest (but which are less directly
+relevant to sendmail) are:
+
+ RFC931 Authentication server
+ RFC987 Mapping between RFC822 and X.400
+ RFC1049 Content-Type header field (extension to RFC822)
+
+Unfortunately, for a variety of reasons the Makefiles are for the new
+Berkeley "make" and will not work on the old, traditional make. I urge
+you to get this make from Net2 (available on many public FTP archives).
+Failing that, some directories have a "Makefile.dist" that will work on
+older versions of make (but don't have the niceties included).
+
+Similar comments apply to the man pages -- they use the new Berkeley
+-mandoc macros instead of the -man macros. You can get these from
+Net2 as well.
+
+IF YOU WANT TO RUN THE NEW BERKELEY DB SOFTWARE: **** DO NOT ****
+use the version that was on the Net2 tape -- it has a number of
+nefarious bugs that were bad enough when I got them; you shouldn't have
+to go through the same thing. Instead, get a new version via public
+FTP from vangogh.CS.Berkeley.EDU, file pub/db.tar.Z. This software
+is highly recommended; it gets rid of several stupid limits, it's much
+faster, and the interface is nicer to animals and plants. You will
+also probably find that you have to add -I/where/you/put/db/include
+to the sendmail makefile to get db.h to work properly.
+
+The structure of this directory tree is:
+
+cf Source for Berkeley configuration files. These are
+ different than what you've seen before. They are a
+ fairly dramatic rewrite, requiring the new sendmail
+ (since they use new features).
+doc Documentation. If you are getting source, read
+ op.me -- it's long, but worth it.
+mail.local Source for mail.local(8), a local delivery program.
+ Older versions of sendmail called /bin/mail with a
+ special -d flag to mean "really deliver this mail";
+ this is a completely new (and much smaller) program
+ that does absolutely nothing but deliver local mail.
+ THIS IS SPECIFIC TO 4.4BSD, and is not under my
+ control.
+mailstats Statistics printing program. It has the pathname of
+ sendmail.st compiled in, so if you've changed that,
+ beware. This isn't all that useful.
+makemap A program that creates the keyed maps used by the $( ... $)
+ construct in sendmail. It is primitive but effective.
+ It takes a very simple input format, so you will probably
+ expect to preprocess must human-convenient formats
+ using sed scripts before this program will like them.
+ But it should be functionally complete.
+praliases A program to print the DBM version of the aliases file.
+ It hasn't been converted to understand the new Berkeley
+ DB format (which we are using).
+rmail Source for rmail(8). This is used as a delivery
+ agent for for UUCP, and could presumably be used by
+ other non-socket oriented mailers. Older versions of
+ rmail are probably deficient.