When troubleshooting SMTP email issues it is oftentimes handy to send a test email directly from Windows in order to narrow down the part of the system with the problem.
Andover Continuum, EcoStruxure Building Operation
Simple way to test SMTP email for testing purposes.
- Make sure telnet is turned ON in Windows. (If not, go to Control Panel > Programs > Turn Windows Features On or Off > turn ON the Telnet Client.)
- Open a command prompt and type telnet domain name (or IP address) and port.
telnet 10.169.9.10 25
- Type HELO and identify the sending system
- Type mail from: followed by an email address
mail from: firstname.lastname@example.org
- Type rcpt to: followed by destination address. (NOTE: must be an email account in the mail server)
rcpt to: email@example.com
- Type data then ENTER key
- Type a message
- Type . (period) then ENTER to end
NOTE: Type slowly and if you mistype something hit enter and after the error re-type the line. Using backup space appears to work but it doesn't.
- Make sure Telnet server is installed on the SMTP server.
- Make sure Telnet service is enabled/running on the SMTP server