After turning on “Telnet client” for windows, run the following telnet test to connect to Gmail SMTP Server. Telnet Test on Windows 7 vista and XP: In XP, click Start –> Run and on Windows 7 and Vista click the Start Orb. In XP, enter “telnet 465” against text box labeled “Open:” and click “OK”.

Send email from a printer, scanner, or app - G Suite Admin Enter as the server address. In the Port field, enter one of the following numbers: If you're using SSL, enter 465. If you're using TLS, enter 587. For authentication, enter your full G Suite or Gmail address ( and password. Make sure to sign in to the account before you use it with the device or app. Which SMTP Port Should I Use? Understanding Ports 25, 465 Jun 11, 2020 Troubleshooting: How to test the Google SMTP relay service Feb 05, 2017

retrieve gmail using telnet - Server Fault

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How to manually test if an SMTP server can receive email

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