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A comment on Tell HN: Fastmail is leaking internal routing email address/username with teams. Parent comment

Re:Tell HN: Fastmail is leaking internal routing email addre... by k_roy on Thursday October 12, 2023 @10:53PM (#37866027)
Because it's the difference between someone gaining access to a single mailbox versus the whole config.
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Re:Tell HN: Fastmail is leaking internal routing email addre... by dejan on Monday October 16, 2023 @04:00AM (#37896937)
I think you're reading that wrong. It's an issue with the protocol. IMAP/SMTP as implemented in most clients do not support 2FA. You can add 2FA on your own on the webmail, but you could still circumvent it by using the protocol directly. It's not a Migadu-specific thing.
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