If your provider is working for you, then all is good. I suspect they either A) have hundreds of thousands or more e-mail users in total, or B) they work through one of the big providers for you.
If your provider only serves 20,000 or fewer e-mail clients, the costs for them to play white-list, black-list, whack-a-mole, pleading to keep their legitimate users’ e-mail working smoothly would be prohibitive - upwards of $10 per year per e-mail account just for the employee(s) tasked with negotiating (and solving) those issues behind the scenes for their users (including you), not to mention policing their users to prevent them from abusing the e-mail system.
MangoCats@feddit.it 3 weeks ago
If your provider is working for you, then all is good. I suspect they either A) have hundreds of thousands or more e-mail users in total, or B) they work through one of the big providers for you.
If your provider only serves 20,000 or fewer e-mail clients, the costs for them to play white-list, black-list, whack-a-mole, pleading to keep their legitimate users’ e-mail working smoothly would be prohibitive - upwards of $10 per year per e-mail account just for the employee(s) tasked with negotiating (and solving) those issues behind the scenes for their users (including you), not to mention policing their users to prevent them from abusing the e-mail system.