2 ms·
You can (sort of, with a great deal of effort) but you don't. And there is no effective way to prevent phishing in SMTP/etc if the server accepts connections f
by networkimprov 6y ago
You can (sort of, with a great deal of effort) but you don't.
And there is no effective way to prevent phishing in SMTP/etc if the server accepts connections from the public Internet.
If you didn't, I suggest reading the protocol draft and "Why TMTP?"
- LoSboccacc 6y agoyou can check that the envelop and message sender header match at the mx level and let spf handle the rest
- networkimprov 6y agoThere is no authentication of the John Doe part of John Doe <not.john.doe@example.com>
- LoSboccacc 6y agoDMARC