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Out of curiosity, in situation like these, if you send an e-mail to someone with a Fastmail account, does it eventually get to them or will it bounce back?
by syntaxing 5y ago
Out of curiosity, in situation like these, if you send an e-mail to someone with a Fastmail account, does it eventually get to them or will it bounce back?
- js2 5y agoSMTP servers queue messages and retry periodically. It’s an old and resilient protocol. Eventually the message will bounce, but it’s up to the sending SMTP server how long to retry before giving up. There are some guidelines here: https://datatracker.ietf.org/doc/html/rfc5321#section-4.5.4 https://datatracker.ietf.org/doc/html/rfc5321#section-4.5.4
- tharkun__ 5y agoShort answer: yes Long answer: it depends. On the settings on all the parties involved. Mail bounceds after the retry limits and timeouts are exhausted. Your provider tries 5 times over 24 hours? Then that's how long fastmail has to be unreachable by your provider. Maybe my provider reaches them via their secondary routes and thus there's zero chance of bouncing. Mail goes through right away. At least to their server. But maybe the recipient reached their servers via the attacked primary and thus can't see/fetch that email.
- azinman2 5y agoSMTP servers will keep retrying for a while.
- linux2647 5y agoI think the retry period is somewhere between 48 and 72 hours
- dataexporter 5y agoIt should eventually get to them. https://twitter.com/Samuel_SGS/status/1451380974776770565 https://twitter.com/Samuel_SGS/status/1451380974776770565
- MerelyMortal 5y agoI have the Fastmail Amdroid app installed. I received push notifications that had contained the beginning text of emails, but I couldn't load the app and actually read the whole email. Now that the attack is over, I can open the app and read those emails.