This depends if you have a website on your domain and it appears on search engines. I do and had to modify Rspamd as bots were spamming addresses like abuse@ and other dictionary words.

Why can’t all cell providers have an agreement where if the user dials 911 or whatever the equivalent is in their country your phone will connect to any network if your provider isn’t currently available and route the call.

Being restricted to only your network when another provider might have a cell tower nearby with full signal is ridiculous in an emergency.