em Client won't accept my outgoing mail settings that I've used for every other mail setup,

em Client won’t accept my outgoing mail settings, I can receive emails fine but it’s saying it cannot connect to the server I’ve used for every other email setup I’ve had, Not sure if there is an em Client outgoing server I can use or not…It’s my own email, not gmail etc…
Could someone please help?

Completely disable your anti-virus or firewall and try again. If that is the problem, then you will have to alter the settings in those applications to allow eM Client to use the SMTP port.

If that is not the problem, can you give the server details for another client on which it works? Just the port number and security policy.