Type DATA and press Enter to write the message.Type HELO or 'EHLO ' and press Enter.Type telnet 25 (where is the name of the SMTP (outgoing) server of your mail server or provider) and press Enter.Press Windows+R, type cmd, and press Enter.If you try to send an email that contains the EICAR test string from your local mail client, your antivirus software detects the test string and blocks it. Verify that the On-Delivery Email Scanner is working correctly To verify that your On-Delivery Email Scanner is working, use a Telnet utility to connect so that you can send the EICAR test string to a known recipient.
