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SMTP servers are able to reply whether a user exists, and some still do. Your own server will send you a "undeliverable" message if it receives a negative reply
by emteycz 5y ago
SMTP servers are able to reply whether a user exists, and some still do. Your own server will send you a "undeliverable" message if it receives a negative reply.
- capableweb 5y agoYes, but that's different. That checks if the user exists, not if the person behind the user actually has access to that user.