move 7BIT information from per-mailer to per-connection so it can
be tweaked based on the other end

make HASFLOCK a 0/1 definition so Linux can turn it off

restore old prog mailer handling -- programs executed from
an alias (but not through a .forward) are run as daemon

some cleanup for short syslog buffers

fix problem that was causing the ctladdr of whoever ran the daemon
(usually root) to own the delivery process

give proper reply code on tempfail

improvements to local program access lockouts

fixes to restrict users who don't have a "regular" login shell (i.e.,
not listed in /etc/shells) from forwarding to a program or file; they can
write their .forward file from another machine and then

fixes to restrict users who don't have a "regular" login shell (i.e.,
not listed in /etc/shells) from forwarding to a program or file; they can
write their .forward file from another machine and then get in.

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fix null pointer dereference

avoid misleading error message if an SMTP mailer drops core

fix problem of local mailer being called with uid of receiver,
not uid of sender -- this was an unintended semantic change

avoid bogus pointer dereference in shortened logdelivery format

move SmtpError decl out -- two identical decl's seem to be confusing gcc

adjust ctladdr processing

deal with possibility of very short syslog buffers (for SVR4)

fix problem that caused mailers returning EX_IOERR or EX_OSERR to
drop the error message

fix typo in logdeliver() that truncated part of the log

fix bogus implementation of name overflow limiting

minor typos

fix typo -- setuid => setgid

try to keep syslog entries reasonably short

fix problem that allowed Deferred: messages to override fatal messages

don't try to print the hostname on -bv if there is none.

curhost can be null if running SMTP to a program: avoid core dumps

improve diagnosis of null host name/signature