I have asked this question and am opening a new question as per SE policy.
The remote SMTP server can be connected to via its own 465 port.
However, I want to reach that server via a cloud server. This SE answer says, that both the sender and the receiver server communicates via port 25. But I want this:
Cloud server :--------> reach mail Server at port 465 :-----------------> Reach reciever mail address.
The second bridge is where both servers will communicate over port 25, that is clear. But in the first bridge, do I need port 465 open? Or is there a way for me to bypass port 465, yet send the EHLO and MAIL FROM commands to the mail server?
Thank you.
