Perfectly safe email rejected as spam with incorrect 552 error

[#1]

TM: your shorter email.

I have tried to send an email to Cloudmark! At a quick look it didn't seem possible but I have found an address that, while not for complaints, is a possibility.

In passing, Cloudmark is wrong, gmail is correct.

"...on the ball with responding to what is happening around the globe...zero-hours...". So, you support censorship.

[#2]

Longliner: I wasn't given a perfectly good explanation here. However our private conversation progressed exactly as I had hoped. 

Oh and I wished Jono a good holiday.

[#3]

Glad you seem satisfied, well done Jono as usual! May I join in wishing Jono a happy holiday.