Hi Blue_Cookeh,
We have been working on a category for ClassDojo here at Smoothwall, the domains that we have found to make it work are as follows:
api.classdojo.com
logs.classdojo.com
pstatic.classdojo.com
classdojo.pubnub.com
toolkit.classdojo.com
dojophotos.s3-accelerate.amazonaws.com
images.classdojo.com
When those domains are in a 'HTTPS Do not inspect' policy and in an 'Allow' policy then it should work as expected(This is Smoothwall specific, so I'm not sure what the equivalent is in Netsweeper)