19-03-2019: release version 0.08
- Remove libowfat dependencies

07-08-2013: release version 0.07
- Add IPv6 support

23-06-2013: release version 0.06
- Add new define elogerr function and simplified those printing to stderr log
- Change coding style to 2 spacing instead of using TAB as there is no reason
  to follow kernel coding style
- Add $HELO_CHECK_PTR_MATCH support
- Add $HELO_CHECK_ADD_HEADER support
- Update README and plugin-check-helo.html

07-06-2013: release version 0.05
- Change response numbers for defer (451) and reject (553) to follow what we
  used for rblsmtpd instead
- Add support to skip this plugin if $RBLSMTPD is set and empty
- Various bugs fixed mainly due to str_free() those not suppose to for static
  str declarations
- Rename declaration of str errormsg to str estr

31-05-2013: release version 0.04
- Fix typo in resp.number to 421 instead of 451 if $HELO_CHECK_DEFER is set
- Change return value in check_hostname function to actual ret value instead
  of 0
- If ret == EAI_MEMORY return Out of Memory error in response in function
  response *sender besides int outofmemory greater than 0
- If resp.number is greater than 0 and ret == EAI_NONAME, defer or reject
  accordingly in function response *sender otherwise defer the mail for
  remote MTA to retry later as failsafe

30-05-2013: release version 0.03
- Fix plugin-check-helo.html
- spec: Update and bump to version 0.03
- Update plugin-check-helo.html
- Update README
- Add match_ipv4 function, implement $HELO_CHECK_REMOTEIP and
  $HELO_CHECK_REMOTEIP_MATCH
- Add init_HostDNSIP function, redo struct HostDNSIP and free_HostDNSIP
  function
- Remove a space
- Implement support environment variable $HELO_CHECK_VERBOSE

25-05-2013: release version 0.02
- Add define macro MAX_DNSIP_RECORDS default to 10 if not define and update
  function check_hostname to have this limit

24-05-2013: release version 0.01
- Initial release
