Can somebody help please

I still cannot log on, I have read the forum and done everything suggested but still no luck, Is somebody able to help. this is the message I receive. I have checked the firewall and relogged my host name but it still keeps coming up as

[12:56:59] SmartFTP v2.0.996.33
[12:56:59] Resolving host name
12:56:59] Unable to resolve host name.
[12:56:59] Active Help:
[12:56:59] Cannot login waiting to retry (30s)...

any help appreciated please.