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It's possible to block all mail sent through mass mailers like mailchimp and many others like it. Just block by the connecting client address/reverse looked up
by written 9y ago
It's possible to block all mail sent through mass mailers like mailchimp and many others like it. Just block by the connecting client address/reverse looked up domain. They don't use that many 2nd level domains. If they're sensible they'll penalize senders for sending to email address that return 5xx errors and drop your address from their lists permanently.
- jacquesm 9y agoAnd then you end up losing legitimate mail as well.
- written 9y agoWhy? Just use different address for the legitimate service and whitelist it. If an address is out there on some spam list, you'll be getting spam to it eventually. I have different rules for different addresses. Public e-mail adresses and e-mail adresses that are meant for online services. Public ones are permanent and filtered and mailchimp and similar don't get to send mail there. The other type of address is whitelisted and disposable. Everything ends in the same mailbox. Works like a charm.