They don't have PFS, either. That's bad, though unfortunately still common. As far as I know Akamai's position is that the (small) performance cost of PFS is unacceptable. They would be delighted if it was faster (which people are working on).
I think the F is because of the 1024-bit, MD5 CA. That seems to be more of an argument for clients to disable that CA certificate, especially since there's another, good trust path, but maybe I'm missing something.
Unfortunately, that's not the case. From RFC 5246:
Note: some server implementations are known to implement version
negotiation incorrectly. For example, there are buggy TLS 1.0
servers that simply close the connection when the client offers a
version newer than TLS 1.0. Also, it is known that some servers will
refuse the connection if any TLS extensions are included in
ClientHello. Interoperability with such buggy servers is a complex
topic beyond the scope of this document, and may require multiple
connection attempts by the client.
An attacker that can insert themselves between client and server can cause a negotiation failure - causing the client or server to negotiate a weaker protocol/cipher combination - so its still important to disable weak cipher suites on the server, especially with browsers as old as IE 6 or 7 still kicking around.https://www.ssllabs.com/ssltest/analyze.html?d=ozsale.com.au
You'll see in the Qualys report that the Akamai accelerated Ozsales gets an "F" & from the Qualys report you'll note that results in a PCI compliance failure (near the bottom of this report):
https://www.ssllabs.com/ssltest/analyze.html?d=www.ozsale.co...
The Baltimore root is trusted, but also signed by the old GTE 1024-bit root. It's not clear to me what harm it does to have an appendix of old roots above a well-managed, trustworthy trusted root.
Technically, the F for blogs.akamai.com was a bug (now corrected; the grade after the fix is C). I say "technically" not because I approve of export cipher suites, but because the implementation did not follow the documentation (the rating guide, linked from every report). Export suites are hopelessly weak and will be treated more harshly in the next guide revision. The new grade is certainly not something to be happy about.
https://www.ssllabs.com/ssltest/analyze.html?d=developer.aka...
https://www.ssllabs.com/ssltest/analyze.html?d=a248.e.akamai...
https://www.ssllabs.com/ssltest/analyze.html?d=network.akama...
The thing is, the worst part is knowing a child is capable of A's:
https://www.ssllabs.com/ssltest/analyze.html?d=control.akama...
The grades are up to Cs now and should be As within a day.
I'm glad Ivan and Qualys are helping show us where we really are.
https://www.ssllabs.com/ssltest/analyze.html?d=blogs.akamai....