ssh_exchange_identification: Connection closed by remote host

[John Almberg]

Hi guys,

Woke up this morning and discovered that one of my FreeBSD 7.2 servers 
was down. When I try to SSH into the box, I get this:

~ 510 $ ssh me at my.example.com
ssh_exchange_identification: Connection closed by remote host

FTP doesn't work, either, but the DNS server on the machine responds to 
queries, and I can ping the box.

Any ideas on what might be the problem?

Thanks: John