Re: Sad but not terrible
Yes, I know no sensible person sends mail by "telnet <mx> 25"
While this may be true, spammers do exactly that programatically. Spew to port 25 and just discard the result.
Me? One of my web cams nicely transfers pictures once a minute to my FPT server and has for over 10 years. Of course, FTP is a really weird protocol (PORT/PASV and all that), but if it is implemented, it DOES work. There is a lot of history around it and the problems/flaws are pretty well known, and for the most part pretty well fixed. It is like the energizer bunny, it keeps going, beating its drum.