how to open port 2587 with IP ses amazon?

I using a2hosting share host. I want to send mail with ses amazon but, when i send support ticket, support answer : “Thank you for contacting us over this matter. We will surely open port 2587 for you but we need the destination IP address for which this port needs to be open. Please share the destination server IP address or URL and we will open the port for you. Meanwhile, If you have any other concerns, please do not hesitate to ask”

But i don’t know what IP ses amazon.

Please help me and give me some advice.
thank so much