Yesterday, I emailed the people at MailMarshall to see if we can be unblocked by their filtering stuff.
Apparantly, at the Ministry of Health, for example, No Minister is blocked for its "Adult and Nudity" content.
I'm not sure about nudity, because these seem to be the type of tits, bums, pricks and c**ts that we usually deal with. But there you go.
UPDATE: This is what I received this morning.
Hello ,This email is in reference to Marshal Technical Support ticket number MTS-202970, Why is my blog banned from some NZ government departments?.
As a software supplier we supply the tools to do a job. Each organization that has our product adjust the rules to fit there purpose. Therefore we are not responsible for the content blocked by our product.If you wish your site to unblocked by a specific organization you will need to contact them direct and request your site to be put into an exceptions list.