Comment by pkaeding
10 days ago
You would still be able to use the telnet client to connect to an SMTP server on TCP port 25, just not port 23, right? I don't think that part changed here.
10 days ago
You would still be able to use the telnet client to connect to an SMTP server on TCP port 25, just not port 23, right? I don't think that part changed here.
It's... not super clear from the article whether this is a port block or a stateful protocol thing. But yes, you're probably right and SMTP spoofing is probably safe for now.
I read it as a clear port 23 block.