don't change alpha case on header field names

delete duplicate 8th bit stripping

change remotename to use flag bits instead of individual parameters;
add a pstat parameter to return status information up

RFC 1413 (IDENT) protocol support

fixes to properly compute priority, nrcpts, etc. on requeued delivery

arrange to quote backslash as well as other special characters

clean up logging of email received from localhost

add X-Authentication-Warning: headers on possible attempts at forgery

initial hooks for ISO networking

don't free header values -- they are still accessible from
BlankEnvelope

include a warning timeout after some interval; get rid of QueueRun
global and put it in the envelope; some other minor bug fixes

restore e_sender as sending address sans decorations

early bind default headers

changed "received from" to "relay=" for consistency

change "received from" logging on internal error response

undo RESPONSE hack -- is it worthwhile?

clean up from= logging on internally generated responses

allow host on local addresses; don't do domain extension on
return path, ever -- for <> addresses

changes for ESMTP; mostly better delimiter character pointer passing

changes for better logging of mail submitters

propagate alias owner information back to envelope sender

overhaul status of SMTP reply codes

don't log from= info on sendmail -t -bv

change $d to be current date, not origination date

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