Does every site use the same port for SMTP?

My question is whether every website uses the same port for smtp? It’s about Hydra

Usually an outgoing server employs port 25.
You can also use port 587 or port 465 to avoid spamblocks.
port 587 is supported by almost every outgoing SMTP server and it’s useful for unencrypted or TLS connections; while port 465 is the right choice if you need to connect via SSL.