fix excess # args to syslog; fix pid log file open; consider addrs
"different" if uids differ; exit in main on bad args; fix null ptr refs
through RealHostName; diagnose null return from hostsignature

diagnose null signature

set RealHostName under all circumstances

consider addresses "different" if their uids differ

exit on bad parameters

don't write PidFile until we are actually about ready to accept
connections

limit number of arguments to each invocation of syslog for portability

use 252 response to VRFY if PRIV_NOVRFY is set per RFC 1123
section 5.2.3.

optimizations; don't ignore _res.options bits in getcanonname()

allow prescan to return a pointer to an empty list; clean up some
prescan error reporting; changes to getcanonname: don't assume that T_ANY
returns everything (it's not T_ALL, and caching can confuse

allow prescan to return a pointer to an empty list; clean up some
prescan error reporting; changes to getcanonname: don't assume that T_ANY
returns everything (it's not T_ALL, and caching can confuse it).

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don't assume that T_ANY returns all info for a domain

allow prescan to return a null vector; fix some duplicate prescan errs

fix some uninitialized variables; <unistd.h> everywhere; logging
changes; accept host name inside [...] to avoid MX lookup

portability updates, mostly ultrix

allow sending to [hostname] to bypass MX lookup

set QDONTSEND together with QBADADDR

change logging to use more keyword=value style logging

have HELO/EHLO announce SIZE option

yet more logging

changes for ESMTP; mostly better delimiter character pointer passing

header file cleanup; primarily #include <unistd.h> in sendmail.h
and delete duplicate cruft

clean up header files

fix null pointer reference problem

fix another owner- bug; improve logging; run all programs without
ctladdrs as daemon; add -qXstring to limit queue run; hooks for ESMTP
; improve syntax checking in readcf

hooks for SMTP Service Extensions