SMTP Error 500 : The last command sent by your server
\nwas not recognized as a valid SMTP or ESMTP command,
\nor is not formatted in the way the server expected. This
\nincludes situations where the command is too long.
\nNote that commands that are recognized, but not
\nimplemented, are handled by different status messages
\n(see 502 and 504).
\nNote : A \u201c500 unrecognized command\u201d server response
\nis often a case of antivirus software and\/or firewall
\ninterfering with incoming and\/or outgoing SMTP
\ncommunications. Read your antivirus \/ firewall software
\ndocumentation thoroughly to solve the problem.
\nExamples of SMTP Error 500 error messages : \u201cSMTP
\nPermanent Error: 500 Access Denied By Port Access\u201d or
\n\u201cSMTP Error 500 Line too long\u201d.<\/p>\n","protected":false},"excerpt":{"rendered":"