On 2018-10-26 14:36, Poliman - Serwis wrote:
Thank you for answer. I have static IP - I bought VPS from OVH. I have
there
configured few domains with mailboxes. On the server are services like
www,
ftp, mail. So, if I understood well, I should block port 25.
Maybe you can go back one step and explain why you think you need to
block port 25?
I mean, if you want to be able to receive e-mails you need to allow
incoming connections on port 25. If you want to send e-mails from your
server then you need outgoing connections on port 25.
Or did I misunderstand you?