Thanks for the reply, I had a look and there was nothing in the “wp-options” table.
Perhaps there is some caching happening on the server level causing this. I am moving the site to a new hosting environment soon. So currently have the default WP Mailer function in place and will set up a SMTP plugin after the site is moved. I will see then if the settings are still being detected, my suspicion is that they wont be. But we shall see.
I will leave an update when I know.
Thanks again.
