I have a raspberry pi running postfix. I Realised unless I open port 25 I absolutely cannot receive emails (I have 587 open and can send but not receive them). However I heard there are scaries online which someone could potentially send emails from your server without consent. I believe as well my ISP doesn’t block port 25. Is there anything I should do right now before opening port 25, or should everything be safe enough?
Hi, I recommend you read the book “Run Your Own Mail Server”. The fact that a book exists for this topic is all the proof you need to not do this decision. But if you absolutely must, this is the way.
Don’t do that
too late.
friends dont let friends host email. its just become too top heavy (complexity-wise) if you want it to be fully functional and secure.
How can I have reliable email that I can control, then?
