Suspects your message is spam and rejected it - Message rejected as spam. Please stop making teachers' lives more miserable.

Thanks Gary hi guys, add another victim to the list.

One thing you may want to try is if the email contains a link or an image to a link try sending without that if it goes then this is the part of the message being blocked by our server or firewall and will need to be removed.

I left the compose window open didn't change a single thing in the email, and approx 30 mins later I hit send again and away it went without issue assuming it makes it to the recipient.

Hoping this is the appropriate forum as I've been hitting my head against the wall regarding this issue since last Thursday.