Nmap scan report for inbound-reply.s7.exacttarget.com (136.147.189.244)
Host is up (0.18s latency).
Not shown: 96 filtered tcp ports (no-response)
PORT    STATE  SERVICE
25/tcp  open   smtp
113/tcp closed ident
465/tcp closed smtps
587/tcp closed submission

Nmap done: 1 IP address (1 host up) scanned in 4.80 seconds