+ 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).
+contrib Some contributed tools to help with sendmail. THESE
+ ARE NOT SUPPORTED by Berkeley -- contact the original
+ authors if you have problems.
+doc Documentation. If you are getting source, read
+ op.me -- it's long, but worth it.
+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.
+src Source for the sendmail program itself.