小编pro*_*oza的帖子

我正在尝试通过 Outlook 连接到 postfix 服务器（通过 smtp 发送示例消息）。在服务器上，端口似乎是打开的：

 nmap -sT -O localhost

Starting Nmap 6.40 ( http://nmap.org ) at 2016-09-24 15:23 EDT
Nmap scan report for localhost (127.0.0.1)
Host is up (0.000046s latency).
Other addresses for localhost (not scanned): 127.0.0.1
rDNS record for 127.0.0.1: localhost.localdomain
Not shown: 990 closed ports
PORT      STATE SERVICE
21/tcp    open  ftp
22/tcp    open  ssh
25/tcp    open  smtp
80/tcp    open  http
110/tcp   open  pop3
143/tcp   open  imap
993/tcp   open  imaps
995/tcp   open  pop3s
3306/tcp  open  mysql
10000/tcp …