use bavail (non-superuser available) instead of bfree (superuser avail)

spelling error

don't "lose" queue runs; completely reset state on RSET; send errors
from <> and don't reply to such messages; explicitly check for [a.b.c.d]
syntax referencing yourself; generalize read timeouts

generalize read timeout

send errors with return path = <>; don't respond to such messages

do special check to for IP address matching our own

generalized timeouts; make RSET reset everything

try to catch exec problem with automounter

fix "lost" queue run problem

add MAXIPADDR

add EF_VRFYONLY support

close cached connections on forks and mailer execs; fix bug in
QSELFREF code; add option p (privacy flags) and b (minimum blocks free);
VRFY just verifies, EXPN really expands

optimization: don't expand aliases if you are in queue-only mode

make VRFY just verify; EXPN does full expansion

add EF_VRFYONLY flag

syslog when low on disk space

close cached MCI connections after a fork; add p (privacy) and b
(min blocks free) options; fix selfref code; clean up $#error format

many minor bug fixes; add "c" mailer flag to strip comments;
improve YP support; move metacharacters from C0 to C1; change method of
doing sender duplicate deletion

more bug fixes from Eric Wassenaar

let HPUX use initgroups; -DHASINITGROUPS if you have one

make duplicate deletion more global

put better information in Received: lines

fix glitch with \001 => \201 changes

handle cases where flock() returns EOPNOTSUPP or other errors

fix a variety of bugs found by Eric Wassenaar <e07@nikhef.nl>