Of all of those, I would consider TLS_RSA_WITH_3DES_EDE_CBC_SHA the only non-
broken one, and even that one isn’t great (only 112 bits of security and very
slow). I’m betting this is on Windows XP, being the only OS out there that’s
still used without AES support. I would strongly suggest either updating your
OS or switching to a client that includes its own TLS library.
Anyway, you should be able to add this cipher to your cipher list. Don't use
"ALL", you'll get a lot of broken ones. A better solution would be:
ciphers = "HIGH+kEDH:HIGH+kEECDH:HIGH:!PSK:!SRP:!aNULL"
Make sure this setting is inside the relevant "ssl" block.
Thijs