Improvements to attachment plugin
Remove proprietary header
Remove duplicate filename rejection
Fix helo.checks plugin
Merge with upstream
Merge pull request #623 from smfreegard/master

Improvements to attachment plugin
Fix helo.checks again.. add further test
Remove comment
Merge pull request #646 from smfreegard/master

Fix test failures
dnsbl: moved rfc1918 checks from _base into dnsbl

Moving the checks into plugins/dnsbl properly excludes 127 from DNSBL queries while permitting the dnsbl_list_base tests to execute.
dns_list_base: moved init_redis into new method
dns_list_base: remove net_utils
Merge pull request #651 from msimerson/dnsbl

dnsbl: moved rfc1918 checks from _base into dnsbl
Update TODO
dnsbl: added net_utils loading