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What keeps someone else behind the same smtp server from spoofing an email?
by MichaelApproved 16y ago
What keeps someone else behind the same smtp server from spoofing an email?
- _delirium 16y agoA lot of SMTP servers implementing SMTP AUTH will add an annotation "(Authenticated sender: localusername)" or similar, which will let you distinguish between different users of the same mail server, even when they spoof the From: header. Not sure if that's the solution Posterous is using, or how widespread it is, though.