Question : Difference of "Protocol 2,1" and "Protocol 1,2" in config file

Hello, on few hosts I have either private key which support SSH protocol 1 or protocol 2 or both. I want to use a password less login and would like to give preference to use protocol 2 whenever client have both private key.

what entry I need in config file to get it done?

[scenario 1]
client has only Protocol 2 key
entry in config is "Protocol 2,1"
it works

[scenario 2]
client has both Protocol 1 and 2 key
entry in config is "Protocol 2,1"
it works

[scenario 3]
Client has only Protocol 1 key
entry in config is "Protocol 2,1"
it DOESN't works

Answer : Difference of "Protocol 2,1" and "Protocol 1,2" in config file

firewall issue?  you could test with a google smart host or hotmail (if you have their accounts).  Really there isn't a whole lot to IIS smtp.

check: http://www.microsoft.com/technet/prodtechnol/WindowsServer2003/Library/IIS/6003ab51-7eb5-47b2-8d92-e26b1deeeac1.mspx?mfr=true