EXPLANATION:
All or part of the from address contained in your message is missing or improperly formatted.
SOLUTION:
Please correct the message "From: address" sent in your SMTP transaction. The from address is typically formatted as myEmailHere@my-Domain.com. You may need to contact your ISP or server administrator for additional assistance.
For additional troubleshooting, reference the manual telnet directions. The message From: address is included after the DATA command.