[mmcclimon]

(I work for Fastmail.) One of our attempts at doing some mitigation of the attack caused this; we fixed it about 16:00 US Eastern this afternoon. Sorry about that!

Without getting into too much detail: we were limiting some HTTP methods, but unintentionally blocked REPORT, which DAV clients use to see what’s changed.

[rswail]

This is going to sound weird, but my father can't send email with attachments currently. I'm a long time fastmail user/customer and I'm also a long time IT guy so can't see what's going on.

Basically SMTP login and everything works fine, client sends the message and then it just times out.

[trulyrandom]

All good now. Thanks!