TLS Session resumption (caching) - NO

Hi,

 

My SSL profile keeps giving me this orange warning on SSLLABS: TLS Session resumption (caching) No (IDs assigned but not accepted)

 

I've did my research, and it was known to give this when more SSL profiles are used under on VS - this is not the case with me.

 

I have Cache size set to default 262144 sessions with 7200 seconds timeout (lowering the numbers did not do the trick).

 

My ciphers are: !LOW:!SSLv2:!SSLv3:!MD5:!RC4+SHA:!EXPORT:!DHE:ECDHE+AES:AES+SHA+RSA:@STRENGTH

 

but I don't really believe it's the ciphers fault (though I have read similar problem was with TLS1.2 on windows server, and a rollback to TLS1.1 fixed the issue).

 

Any ideas or experience with this? Or should I now worry (though my client is a bit picky, and anything less than green on SSLLABS is a problem...)