We have a complex issue relating to what we believe is a rule, setup on smtp.webhost.co.nz who was acquired by Webdrive, then by openhost, then by crazy domains as best I can tell. 

I believe it's likely, considerably easier to interact with someone who can get to backend support rather than trying to get this done through an interaction with their default helpdesk (who I have had negative interactions with in the past with even basic requests).

If anyone has a channel to their more senior technical support, please PM me etc?