使用 Telnet 端口 25 测试 SMTP 通信
From: http://www.cnitblog.com/winfax/archive/2008/09/07/48818.html
使用 Telnet 端口 25 测试 SMTP 通信 If you have a question or seek clarification, please call Technical Support.3.) From the "Messaging Settings" window Click the "Restrictions and Controls" tab and then click the "SMTP Inbound Controls" tab.
4.) Change the "Verify Connecting Host Name in DNS" setting to "Disabled".
5.) Optionally you can also change the "Verify sender's domain in DNS" setting to "Disabled".
6.) Save the settings by clicking the "Save and Close" button.
7.) Shutdown and restart the Domino Server.
