can't ssh to LINUX machine - looklike key not matching

[tvnaidu]

I can't do ssh into linux machine, looklike key not matching, not sure whether it is using rsa_key/dsa_key, can I force to use only one type of key?.

incase if key not match, can't I success ssh login to linux machine?

[sicarie]

You should be able to remove either rsa or dsa key from the file to use the other key.

If they fail, it should prompt you to use a password - have you checked if the account is locked or not?