This error occurs when JetEmail’s virus scanning system detects malware, viruses, or other malicious content in an email attempting to be sent through our SMTP servers.
[email protected] host relay.jetsmtp.net [103.173.0.0] SMTP error from remote mail server after end of data: 550 [VIRUS] Blocked. See https://reports.jetsmtp.net/?id=000000000000000000&auth=smtpuser