By default, after 20 consecutive (unique) failed login attempts, *or*
a failed login attempt wtih a name from the name.can filter file.
The default temporary ban duration is 10 minutes.
The temporary ban thershold is configurable via LoginAttemptTempBanThreshold
in sbbs.ini and the ban duration is configurable via LoginAttemptTempBanDuration
(in seconds).

the constructor things.  This allows TLS-enabled services to work correctly,
and removes an ugly hack from the web server.

There's still an odd issue with the NNTP service when using TLS though.

to errorlog() so the data/error.log is less ambiguous about where an error
occurred.

FidoNet NetMail can now be gated to an SMTP client (as before), but replies are
now successfully gated back to FTN NetMail. This uses a new more RFC-compliant
To/From address header field format, so older messages (previously gated to
an SMTP client) cannot be successfully replied-to. Tested with Microsoft
"Windows Live Mail 2012" (previously known as Outlook Express).
Test reports/results with other SMTP mail clients would be welcome.

Requires SBBSecho v2.30 or later. File attachments are not yet supported.

those OSs which require it to be correct (ie: FreeBSD).

(needed for ircmsg.js send-failure handling).

Also set the web server status to "Listening" once initializating is complete.
I'm not sure what the newly-introduced "terminated" flag is supposed to
indicate, but it's beign set to TRUE during recycle, so it's probably not
working as intended. Something cleaner probably should be done, but I don't
know exactly what Deuce was trying to accomlish with this variable.

log entries.

addresses specified in the Interface line of sbbs.ini for the server.

before re-reading them.

xpms_add_chararray_list instead.  Prevents having to free string lists
in the sbbs.ini parsing code.

New Features:
- Multiple bindings for each service
  Use comma-separated interfaces on Interface= lines in the ini file.
  Default is now "0.0.0.0,::"
- IPv6 support
- TLS support for the webserver and (non-static) services
  New TLS option in services.ini (ie: Options=TLS)
- Decrease LEN_SCAN_CMD to 35 chars, increase the CID field to 45 chars,
  and rename the MAIL_CMD string to IPADDR.  I think this frees up the
  note field for SysOp use.

scripts global scope (as opposed to js.global which is the instance global
scope), and having exit() define exit_code in js.scope instead of js.global.

This also sets exit_code in js.scope to null when preparing to execute a new
script.  If a new script starts in the same scope as an old one, the old
exit_code value will be destroyed.

This should only impact scripts where js.global != js.scope (bbs.exec()ed,
and mailsrvr)

Broken in rev 1.561 by Deuce:
"Remove *_TO_STRING() and remove some uselss code to return a string value from
the log() JS command." - the "useless code" enabled behavior which the
listserver.js (and possible other JS scripts) depend on.

clients, timeouts, etc.) into the various *srvr.h files and use them instead of
hard-coded constants sprinkled through-out the .c files.
If the web server "max_clients" key isn't specified in the sbbs.ini file,
use 0 (unlimited) for the max_clients value.

  obvious)

(sans angle brackets), before any "name alias" conversion - in addition to the
current matching (against just the name portion of the recipient address or the
aliased target). This allows external mail processor selection/filtering based
on 'to' address even when using an alias to go to a common user (e.g. user #1).

Now using a local-scope variable for temporary mailproc pointer.
Log a warning when external mail processor creates an error drop file.

has been configured to 0 (unlimited).

sendmail thread was running.

We don't really need to check active_clients (redundant with thread_count)
before allowing recycle.

related crashes (mainly due to null pointer dereferences of scfg_t members
freed in cleanup()).
Use of new protected_int_value()  for extra paranoia (but can't use it on
destroyed protected-int's).

as spammers are now hijacking common/valid mail subjects (e.g.
"Google Email Verification") for their spam messages and blocking all msgs with
such subjects is too heavy-handed an approach. :-(

if a received messages is for local or relay. This comparison predates the
domains.cfg file which makes it obsolete. And it really bugged Deuce and
apparently was a problem for his new IPv6-happy version of resolve_ip(). :-P

the log() JS command.

I've likely broken something though, so if you see weird behaviour with
extended ASCII, let me know please.

similar to the FTP server (wait forever for all child threads to terminate).

Wait double the inactivity timeout value for the acknowledgement (250 response)
when sending messages to avoid sending duplicates (an observed problem
with very large messages/attachments).

external mail processors.

empty *IF* the message was redirected to a sub-board.
If not (recipient list empty, but not to a sub), return OK response.

list file (without actually deleting the file), don't bother saving the message
to the message base.