We have a .net cloud application that should be able to send emails, but it doesn't and we're wondering if we're being blocked by a firewall. We're trying to connect to retail.smtp.com, on port 2525. Should we be able to connect to that server on that port?
There's nothing blocking your outbound connection. Whether you can connect to that server on that port is really up to that server. It doesn't (shouldn't) have anything to do with where the connection originates. Will the application do any logging to see where it fails?
We actually do have outbound restriction. Please open a support ticket. Sorry for the conflicting answer to your question.