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SMTP server returned error “Illegal address syntax from unknown in MAIL command:” when emailing the historical logs from an EGX300

The smtp server returned back the following error:
Nov 26 09:16:03 ip-10-10-20-165 postfix/smtpd[23309]: warning: Illegal address syntax from unknown[] in MAIL command:
Also, the diagnostic page of the EGX300 shows a "connection error" under the SMTP portion.

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EGX300 built in webpage configuration 

The from and to addresses are not in a format that the SMTP server recognized

Add the signs "<" and ">" to the from and to address and try to test the email.

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