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Nmap scan report for d246304a.ess.barracudanetworks.com (209.222.82.253) Host is up (0.057s latency). Other addresses for d246304a.ess.barracudanetworks.com (not scanned): 209.222.82.252 209.222.82.255 rDNS record for 209.222.82.253: mail.ess.barracuda.com Not shown: 998 filtered tcp ports (no-response) PORT STATE SERVICE 25/tcp open smtp 587/tcp open submission Nmap done: 1 IP address (1 host up) scanned in 5.53 seconds