Hi! I am new to network and i created a virtual machine in cloud where I use a docker with mailcow. I created a domain in the web interface and send mails between 2 clients. Now my question is the next: is it possible to send mails to mails servers like gmail/yahoo ? because i tryed to send one to my personal address but it didnt arrive. Thank you for future answer. have a good day
No, you need a valid domain to send to external mailboxes
So, without a valid domain, all i can do is creating local domains and send mails only between local users. Right?
Yes and sorry you can send to the outside world, but nobody would accept it because it has no valid MX and so on