Currently we've the problem, that SMTP Mail configuration based on SSL/TLS encryption using Port: 25 is not working. It is possible to add Port 25 and SSL/TLS encryption in the settings (Mail Server) but after testing it results in an error.
Independant from that our company currently only offers for Cloud/SaaS solutions smtp relay service on Port 25 with SSL/TLS encryption. Due to that we see here a major show stopper in using Qlik products and reaching out to you to help us quite soon.
Finally we need a solution for: Enable Port 25 for SSL/TLS for SMTP Configuration