I have been trying to find the solution without success for ages. So it would seem that the settings required in the Outlook outgoing server was selected as TLS as this was the only one that automatically selected the SMTP of 465. As on selecting SSL it changed to 25.
So selecting the SSL first then changing the SMTP from 25 back to 465 and hay presto:)
I had assumed it would be in the setting but couldn't find what exactly so thanks again.