Our ISP blocks outbound port 25 (annoying) and we are currently paying for a relay service.
One of our clients on the server is running a high traffic website and pretty much everyone who goes on the site wants to enter the competition which in turn sends a thank you email. I don't want to stop the thank you email going out but I was wondering if its possible to change the default exim outbound port to 587 and if this would have any adverse effect on email deliverability?
I am running cPanel/WHM. Many thanks!