# nmap -sV 172.18.104.139
Starting Nmap 7.01 ( https://nmap.org ) at 2020-03-07 11:36 EST
Nmap scan report for 172.18.104.139
Host is up (0.000018s latency).
Not shown: 996 closed ports
PORT STATE SERVICE VERSION
22/tep open ssh OpenSSH 7.2p2 Ubuntu 4ubuntu2.4 (Ubuntu Linux; protocol 2.0)
25/tcp open smtp Postfix smtpd
110/tcp open pop3 Dovecot pop3d
143/tcp open imap Dovecot imapd
Service Info: Host: 172.18.108.139; OS: Linux; CPE: cpe:/o:linux:linux_kernel
What does the output indicate about the server with the IP address 172.18.104.139?