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# Revision 1.35 2013/03/14 22:11:25 customdesigned
# Release 0.9.8
#
# Revision 1.34 2013/03/09 05:42:14 customdesigned
# Make TestBase members private, fix getsymlist misspelling.
#
# Revision 1.33 2013/03/09 00:25:23 customdesigned
# Better untrapped exception message. const char for doc comments.
#
# Revision 1.32 2013/01/13 01:46:16 customdesigned
# Doc updates.
#
# Revision 1.31 2012/04/12 23:32:50 customdesigned
# Replace redundant callback array with macros. If this doesn't break anything,
# macros can be eliminated with code changes.
#
# Revision 1.30 2012/04/12 23:08:06 customdesigned
# Support RFC2553 on BSD
#
# Revision 1.29 2011/06/09 15:45:27 customdesigned
# Print callback name for non-int return error.
#
# Revision 1.28 2011/06/08 23:13:48 customdesigned
# Generate special exception when callback return not int.
#
# Revision 1.27 2009/07/28 21:45:54 customdesigned
# Add getversion() to return runtime version.
#
# Revision 1.26 2009/07/28 21:08:20 customdesigned
# Increment del count.
#
# Revision 1.25 2009/07/28 20:58:55 customdesigned
# getdiag method
#
# Revision 1.24 2009/06/09 01:54:44 customdesigned
# Forgot to initialize optional parameter.
#
# Revision 1.23 2009/05/29 20:44:58 customdesigned
# Typo SMFIP_NO constants.
#
# Revision 1.22 2009/05/29 19:53:36 customdesigned
# Typo SMFIS_ALL_OPTS
#
# Revision 1.21 2009/05/29 19:49:40 customdesigned
# Typo calling helo instead of negotiate.
#
# Revision 1.20 2009/05/29 18:25:59 customdesigned
# Null terminate keyword list.
#
# Revision 1.19 2009/05/28 18:36:42 customdesigned
# Support new callbacks, including negotiate
#
# Revision 1.18 2009/05/21 21:53:05 customdesigned
# First cut at support unknown, data, negotiate callbacks.
#
# Revision 1.17 2009/02/06 04:28:08 customdesigned
# Oops! Missing options argument pointer for addrcpt.
#
# Revision 1.16 2008/12/16 04:21:05 customdesigned
# Fedora release
#
# Revision 1.15 2008/12/13 20:29:56 customdesigned
# Split off milter applications.
#
# Revision 1.14 2008/12/04 19:43:00 customdesigned
# Doc updates.
#
# Revision 1.13 2008/11/23 03:06:47 customdesigned
# Milter support for chgfrom.
#
# Revision 1.12 2008/11/21 20:42:52 customdesigned
# Support smfi_chgfrom and smfi_addrcpt_par.
#
# Revision 1.11 2007/09/25 02:26:29 customdesigned
# Update license.
#
# Revision 1.10 2006/02/12 02:00:42 customdesigned
# Resolve FIXME for wrap_close.
#
# Revision 1.9 2005/12/23 21:46:36 customdesigned
# Compile on sendmail-8.12 (ifdef SMFIR_INSHEADER)
#
# Revision 1.8 2005/10/20 23:23:36 customdesigned
# Include smfi_progress is SMFIR_PROGRESS defined
#
# Revision 1.7 2005/10/20 23:04:46 customdesigned
# Add optional idx for position of added header.
#
# Revision 1.6 2005/07/15 22:18:17 customdesigned
# Support callback exception policy
#
# Revision 1.5 2005/06/24 04:20:07 customdesigned
# Report context allocation error.
#
# Revision 1.4 2005/06/24 04:12:43 customdesigned
# Remove unused name argument to generic wrappers.
#
# Revision 1.3 2005/06/24 03:57:35 customdesigned
# Handle close called before connect.
#
# Revision 1.2 2005/06/02 04:18:55 customdesigned
# Update copyright notices after reading article on /.
#
# Revision 1.1.1.2 2005/05/31 18:09:06 customdesigned
# Release 0.7.1
#
# Revision 2.31 2004/08/23 02:24:36 stuart
# Support setbacklog
#
# Revision 2.30 2004/08/21 20:29:53 stuart
# Support option of 11 lines max for mlreply.
#
# Revision 2.29 2004/08/21 04:14:29 stuart
# mlreply support
#
# Revision 2.28 2004/08/21 02:45:21 stuart
# Don't leak int constants if module unloaded.
#
# Revision 2.27 2004/04/06 03:19:59 stuart
# Release 0.6.8
#
# Revision 2.26 2004/03/04 21:43:06 stuart
# Fix memory leak by removing unused dynamic template buffer,
# thanks again to Alexander Kourakos.
#
# Revision 2.25 2004/03/01 19:45:03 stuart
# Release 0.6.5
#
# Revision 2.24 2004/03/01 18:56:50 stuart
# Support progress reporting.
#
# Revision 2.23 2004/03/01 18:36:09 stuart
# Plug memory leak. Thanks to Alexander Kourakos.
#
# Revision 2.22 2003/11/02 03:01:46 stuart
# Adjust SMTP error codes after careful reading of standard.
#
# Revision 2.21 2003/06/24 19:57:04 stuart
# Allow removing a python milter callback by setting to None.
#
# Revision 2.20 2003/02/13 17:08:57 stuart
# IPV6 support
#
# Revision 2.19 2003/02/13 16:58:29 stuart
# Support passing None to setreply and chgheader.
#
# Revision 2.18 2002/12/11 16:44:06 stuart
# Support QUARANTINE if supported by libmilter.
#
# Revision 2.17 2002/04/18 20:20:35 stuart
# Fix for NULL hostaddr in connect callback from Jason Erickson.
#
# Revision 2.16 2001/09/26 13:29:09 stuart
# sa_len not supported by linux.
#
# Revision 2.15 2001/09/25 17:28:40 stuart
# Copyrights, documentation, release 0.3.1
#
# Revision 2.14 2001/09/25 00:36:57 stuart
# Pass hostaddr to python code in format used by standard socket module.
#
# Revision 2.13 2001/09/24 23:44:55 stuart
# Return old callback from setcallback functions.
#
# Revision 2.12 2001/09/24 20:02:30 stuart
# Remove redundant setpriv
#
# Revision 2.11 2001/09/23 22:26:35 stuart
# Update docs. Streamline Milter.py
# update testbms.py to reflect actual sendmail behaviour with multiple
# messages per connection.
#
# Revision 2.10 2001/09/22 15:33:42 stuart
# More doc comment updates.
#
# Revision 2.9 2001/09/22 14:52:27 stuart
# Actually return retval in _generic_return.
# Go over doc comments.
#
# Revision 2.8 2001/09/22 01:59:32 stuart
# Prevent reentrant call of milter_main, which libmilter doesn't support.
#
# Revision 2.7 2001/09/22 01:47:37 stuart
# Forgot to set milter interp.
#
# Revision 2.6 2001/09/22 01:23:53 stuart
# Added proper threading after research in python docs.
#
# Revision 2.5 2001/09/21 20:08:51 stuart
# Release 0.2.3
#
# Revision 2.4 2001/09/20 16:18:16 stuart
# libmilter checks in_eom state, so we don't have to.
#
# Revision 2.3 2001/09/19 06:02:33 stuart
# Make more stuff static.
#
# Revision 2.1 2001/09/19 04:24:13 stuart
# Use extension type to track context in python.
#
# Revision 1.4 2001/09/18 18:48:28 stuart
# clear private data reference in _clear_context
#
# Revision 1.3 2001/09/15 04:19:37 stuart
# nasty off by 1 mem overwrite bugs in wrap_env
# generic_set_callback
#
# Revision 1.2 2001/09/15 03:15:39 stuart
# several bugs fixed, works smoothly
#
# Revision 1.69 2006/11/04 22:09:39 customdesigned
# Another lame DSN heuristic. Block PTR cache poisoning attack.
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# Revision 1.68 2006/10/04 03:46:01 customdesigned
# Fix defaults.
#
# Revision 1.67 2006/10/01 01:44:06 customdesigned
# case_sensitive_localpart option, more delayed bounce heuristics,
# optional smart_alias section.
#
# Revision 1.66 2006/07/26 16:42:26 customdesigned
# Support CBV timeout
#
# Revision 1.65 2006/06/21 22:22:00 customdesigned
# Handle multi-line headers in delayed dsns.
#
# Revision 1.64 2006/06/21 21:12:04 customdesigned
# More delayed reject token headers.
# Don't require HELO pass for CBV.
#
# Revision 1.63 2006/05/21 03:41:44 customdesigned
# Fail dsn
#
# Revision 1.61 2006/05/17 21:28:07 customdesigned
# Create GOSSiP record only when connection will procede to DATA.
#
# Revision 1.60 2006/05/12 16:14:48 customdesigned
# Don't require SPF pass for white/black listing mail from trusted relay.
# Support localpart wildcard for white and black lists.
#
# Revision 1.59 2006/04/06 18:14:17 customdesigned
# Check whitelist/blacklist even when not checking SPF (e.g. trusted relay).
#
# Revision 1.58 2006/03/10 20:52:49 customdesigned
# Use re to recognize failure DSNs.
#
# Revision 1.57 2006/03/07 20:50:54 customdesigned
# Use signed Message-ID in delayed reject to blacklist senders
#
# Revision 1.56 2006/02/24 02:12:54 customdesigned
# Properly report hard PermError (lax mode fails also) by always setting
# perm_error attribute with PermError exception. Improve reporting of
# invalid domain PermError.
#
# Revision 1.55 2006/02/17 05:04:29 customdesigned
# Use SRS sign domain list.
# Accept but do not use for training whitelisted senders without SPF pass.
# Immediate rejection of unsigned bounces.
#
# Revision 1.54 2006/02/16 02:16:36 customdesigned
# User specific SPF receiver policy.
#
# Revision 1.53 2006/02/12 04:15:01 customdesigned
# Remove spf dependency for iniplist
#
# Revision 1.52 2006/02/12 02:12:08 customdesigned
# Use CIDR notation for internal connect list.
#
# Revision 1.51 2006/02/12 01:13:58 customdesigned
# Don't check rcpt user list when signed MFROM.
#
# Revision 1.50 2006/02/09 20:39:43 customdesigned
# Use CIDR notation for trusted_relay iplist
#
# Revision 1.49 2006/01/30 23:14:48 customdesigned
# put back eom condition
#
# Revision 1.48 2006/01/12 20:31:24 customdesigned
# Accelerate training via whitelist and blacklist.
#
# Revision 1.47 2005/12/29 04:49:10 customdesigned
# Do not auto-whitelist autoreplys
#
# Revision 1.46 2005/12/28 20:17:29 customdesigned
# Expire and renew AddrCache entries
#
# Revision 1.45 2005/12/23 22:34:46 customdesigned
# Put guessed result in separate header.
#
# Revision 1.44 2005/12/23 21:47:07 customdesigned
# Move Received-SPF header to top.
#
# Revision 1.43 2005/12/09 16:54:01 customdesigned
# Select neutral DSN template for best_guess
#
# Revision 1.42 2005/12/01 22:42:32 customdesigned
# improve gossip support.
# Initialize srs_domain from srs.srs config property. Should probably
# always block unsigned DSN when signing all.
#
# Revision 1.41 2005/12/01 18:59:25 customdesigned
# Fix neutral policy. pobox.com -> openspf.org
#
# Revision 1.40 2005/11/07 21:22:35 customdesigned
# GOSSiP support, local database only.
#
# Revision 1.39 2005/10/31 00:04:58 customdesigned
# Simple implementation of trusted_forwarder list. Inefficient for
# more than 1 or 2 entries.
#
# Revision 1.38 2005/10/28 19:36:54 customdesigned
# Don't check internal_domains for trusted_relay.
#
# Revision 1.37 2005/10/28 09:30:49 customdesigned
# Do not send quarantine DSN when sender is DSN.
#
# Revision 1.36 2005/10/23 16:01:29 customdesigned
# Consider MAIL FROM a match for supply_sender when a subdomain of From or Sender
#
# Revision 1.35 2005/10/20 18:47:27 customdesigned
# Configure auto_whitelist senders.
#
# Revision 1.34 2005/10/19 21:07:49 customdesigned
# access.db stores keys in lower case
#
# Revision 1.33 2005/10/19 19:37:50 customdesigned
# Train screener on whitelisted messages.
#
# Revision 1.32 2005/10/14 16:17:31 customdesigned
# Auto whitelist refinements.
#
# Revision 1.31 2005/10/14 01:14:08 customdesigned
# Auto whitelist feature.
#
# Revision 1.30 2005/10/12 16:36:30 customdesigned
# Release 0.8.3
#
# Revision 1.29 2005/10/11 22:50:07 customdesigned
# Always check HELO except for SPF pass, temperror.
#
# Revision 1.28 2005/10/10 23:50:20 customdesigned
# Use logging module to make logging threadsafe (avoid splitting log lines)
#
# Revision 1.27 2005/10/10 20:15:33 customdesigned
# Configure SPF policy via sendmail access file.
#
# Revision 1.26 2005/10/07 03:23:40 customdesigned
# Banned users option. Experimental feature to supply Sender when
# missing and MFROM domain doesn't match From. Log cipher bits for
# SMTP AUTH. Sketch access file feature.
#
# Revision 1.25 2005/09/08 03:55:08 customdesigned
# Handle perverse MFROM quoting.
#
# Revision 1.24 2005/08/18 03:36:54 customdesigned
# Don't innoculate with SCREENED mail.
#
# Revision 1.23 2005/08/17 19:35:27 customdesigned
# Send DSN before adding message to quarantine.
#
# Revision 1.22 2005/08/11 22:17:58 customdesigned
# Consider SMTP AUTH connections internal.
#
# Revision 1.21 2005/08/04 21:21:31 customdesigned
# Treat fail like softfail for selected (braindead) domains.
# Treat mail according to extended processing results, but
# report any PermError that would officially result via DSN.
#
# Revision 1.20 2005/08/02 18:04:35 customdesigned
# Keep screened honeypot mail, but optionally discard honeypot only mail.
#
# Revision 1.19 2005/07/20 03:30:04 customdesigned
# Check pydspam version for honeypot, include latest pyspf changes.
#
# Revision 1.18 2005/07/17 01:25:44 customdesigned
# Log as well as use extended result for best guess.
#
# Revision 1.17 2005/07/15 20:25:36 customdesigned
# Use extended results processing for best_guess.
#
# Revision 1.16 2005/07/14 03:23:33 customdesigned
# Make SES package optional. Initial honeypot support.
#
# Revision 1.15 2005/07/06 04:05:40 customdesigned
# Initial SES integration.
#
# Revision 1.14 2005/07/02 23:27:31 customdesigned
# Don't match hostnames for internal connects.
#
# Revision 1.13 2005/07/01 16:30:24 customdesigned
# Always log trusted Received and Received-SPF headers.
#
# Revision 1.12 2005/06/20 22:35:35 customdesigned
# Setreply for rejectvirus.
#
# Revision 1.11 2005/06/17 02:07:20 customdesigned
# Release 0.8.1
#
# Revision 1.10 2005/06/16 18:35:51 customdesigned
# Ignore HeaderParseError decoding header
#
# Revision 1.9 2005/06/14 21:55:29 customdesigned
# Check internal_domains for outgoing mail.
#
# Revision 1.8 2005/06/06 18:24:59 customdesigned
# Properly log exceptions from pydspam
#
# Revision 1.7 2005/06/04 19:41:16 customdesigned
# Fix bugs from testing RPM
#
# Revision 1.6 2005/06/03 04:57:05 customdesigned
# Organize config reader by section. Create defang section.
#
# Revision 1.5 2005/06/02 15:00:17 customdesigned
# Configure banned extensions. Scan zipfile option with test case.
#
# Revision 1.4 2005/06/02 04:18:55 customdesigned
# Update copyright notices after reading article on /.
#
# Revision 1.3 2005/06/02 02:09:00 customdesigned
# Record timestamp in send_dsn.log
#
# Revision 1.2 2005/06/02 01:00:36 customdesigned
# Support configurable templates for DSNs.