Just a quick update, on the sending and deliverability issue from our server2 server4 and server5
The tech team have worked on this this afternoon and installed a bypass system bouncing the emails via a totally different IP block, so these are not being blocked by Microsoft,
We are still investigating and waiting for a reply ...
URGENT update, If you are on our servers and are having email deliverability issues to Outlook, hotmail or other Microsoft systems it is because for an un known reason a complete IP range has been blocked by Microsoft... The data centre are trying to work around until Microsoft get it sorted, but it is effecting 3 of our 5 servers. We apologies ...