*** EDIT --- FM has tweeted about it ***
The status page says it's up, but suddenly:
This site can’t provide a secure connection
www.fastmail.com uses an unsupported protocol.
ERR_SSL_VERSION_OR_CIPHER_MISMATCH
HIDE DETAILS
Unsupported protocol
The client and server don't support a common SSL protocol version or cipher suite.
Using Chrome on mac osx, also can't connect using my phone browser (SSL or Cipher version mismatch)