Gregory's Server
I'm not saying they should, I'm saying they will.
If someone's server is overrun by hundreds of spams from an ever-changing set of spam accounts on a remote server, and the remote server isn't doing anything about it, what other options are left other than blocking the remote server?
@homegrown after the fact? Sure, I'm with you and do that myself (and always temporarily close our registration as soon as we're aware of a significant wave). The point is I see a disturbing lack of nuance, when it comes to asking to get rid of the option or even preventive blocking of servers that offer it. They're not all abandoned hellholes. On the contrary.