Nmap scan report for apache2-zoo.iad1-shared-e1-05.dreamhost.com (173.236.199.111)
Host is up (0.16s latency).
Not shown: 95 filtered tcp ports (no-response)
PORT    STATE SERVICE
21/tcp  open  ftp
22/tcp  open  ssh
80/tcp  open  http
443/tcp open  https
587/tcp open  submission

Nmap done: 1 IP address (1 host up) scanned in 5.19 seconds