more cleanup, fix some inappropriate syserr's

expunge debugging/nonstandard/trojan horse commands from smtp,
logging attempts to use them; log name/address of host from which mail received
("mail from" may not include it or may lie); don't allow

expunge debugging/nonstandard/trojan horse commands from smtp,
logging attempts to use them; log name/address of host from which mail received
("mail from" may not include it or may lie); don't allow debug to affect
permissions locally; change some of the non-system syserrs to syslog at lower
priority; still need to unifdef remaining debug code

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install approved copyright notice

add Berkeley specific header

replace sameword with strcasecmp

don't include ctime as part of priority, since the value affects the results of
shouldqueue; we go back to adding ctime into the workcmpf in queue.c

clean up priority handling, making several of the parameters configurable:
y - WkRecipFact, z - WkClassFact, Z - WkTimeFact, Y - ForkQueueRuns; improve
process title labelling; finish "errors to post

clean up priority handling, making several of the parameters configurable:
y - WkRecipFact, z - WkClassFact, Z - WkTimeFact, Y - ForkQueueRuns; improve
process title labelling; finish "errors to postmaster" option

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SMI changes (somewhat)

save code to throw out invalid Sender: fields for validated senders

lint for 4.3 release

lint

Resolve duplicate SccsId. Remove unused variable.

Add copyright

Changes from Bill Nowicki <sun!rose!nowicki> and Jay Lepreau <lepreau@utah-cs>:
Fix "bad file number" problem; improve error reporting; try to keep messages
closer to their original order. Also, dro

Changes from Bill Nowicki <sun!rose!nowicki> and Jay Lepreau <lepreau@utah-cs>:
Fix "bad file number" problem; improve error reporting; try to keep messages
closer to their original order. Also, drop "safe" mode in readcf since we
never run setuid when -C is specified.

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Add $[ and $] as RHS operators to look up the contents and pass them
to maphostname; maphostname currently looks them up in /etc/hosts and
converts them to canonical form, but could be turned into a

Add $[ and $] as RHS operators to look up the contents and pass them
to maphostname; maphostname currently looks them up in /etc/hosts and
converts them to canonical form, but could be turned into a general
name server..... huzzah!!

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change macro expansion character from $ to \001 so that $'s can be
used in headers -- the .cf file is unchanged by mapping $ to \001.
\001 is now a manifest constant.

Drop "Sender:" hack, since it doesn't work properly when relaying messages.

Insert Sender: line if a From: line is specified and is different from
what we would otherwise put in.

4.2 release version

log the message-id only if non-null

don't rearrange input header lines; force Received: lines to be at the
beginning by always adding new header fields at the end of the header.

don't add an extra tab in the header (white space should already exist)

avoid core dumps on messages with very long header fields

fix *(0) problems

Don't artifically add a "from: $q" when running the queue -- this seems
to cause the from line in the qf file to be ignored.