How to test and troubleshoot SMTP connectivity issues for external senders to an Exchange Server environment.
How to use Telnet and the Windows command line to sent an SMTP email message.
Exchange Server 2010 includes support for POP3 remote access to email, but will require some initial setup and configuration before you can use it.
If you’re needing to do some SMTP testing using a Windows Server 2008 host you’re probably going to need a Telnet client. The Telnet client is not installed by default on Windows Server 2008, so you can use this ServerManagerCmd.exe one-liner to quickly install it: C:\>servermanagercmd -i telnet-client ......... Start Installation... [Installation] Succeeded: [Telnet Client]. […]