$Id$

5.13 2006-03-12 add SURBL/URIBL lookups, patch from Jeff Evans <jeffe@tricab.com>
5.12 2006-01-08 use larger resolver buffer to accomodate spammers with many name servers
5.11 2005-12-20 switch to autoconf/automake/docbook
5.10 2005-10-16 fix compile error on FC3
5.9  2005-09-26 fix bug with empty return paths
5.8  2005-09-25 allow empty env_to at global context level
5.7  2005-09-23 fix bug - failed to return a value from parse_verify()
5.6  2005-09-22 tokenizer errors now go thru the syslog code
5.5  2005-09-21 cleanup debug logging
5.4  2005-09-18 add 'verify' statement
5.3  2005-08-07 properly quit if the config file has syntax errors
5.2  2005-08-02 fix bug - lack of a default return value in CONTEXT::acceptable_content()
5.1  2005-07-20 add multiple syslog debug levels
5.0  2005-07-16 major changes to the syntax of the config file
4.6  2005-04-02 fix bug - Fix enum compilation error on FC3
4.5  2005-01-22 add uuencode decoding for old style attachments
4.4  2005-01-18 fix bug in forked process termination
4.3  2005-01-16 only keep 20% of the resolver sockets in the ready pool
4.2  2005-01-08 always use the separate resolver processes
4.1  2005-01-06 use a local unix domain socket for the resolver process
4.0  2005-01-03 fork off a separate resolver listener process
3.7  2004-10-28 add 'ignore' statement
3.6  2004-09-08 better documentation regarding disabling the content filtering
3.5  2004-07-17 extend the error message for content filtering
3.4  2004-07-15 bug fix - ip addresses cannot have two consecutive periods
3.3  2004-07-09 drop root priviledges properly