Bounceback email error

Do you know what this error mean? My feeling is that the mail server on the receiving end generated based on the spam settings. what do you think?

Thanks,
treost

This is the mail system at host nmail3.netsuite.com.

I'm sorry to have to inform you that your message could not
be delivered to one or more recipients. It's attached below.

For further assistance, please send mail to postmaster.

If you do so, please include this problem report. You can
delete your own text from the attached returned message.

                   The mail system

<sara.rhoades@edmondschools.net>: host mx01.twotrees.net[209.184.44.45] said:
    550 USER REFUSED MESSAGE DATA:
    "http://ttees.twotrees.com/smtp-errors/Error-056.html?&ip=167.216.129.171&hlo=nmail3.netsuite.com&cpl=0&spl=55&su=b.lisas_tbrainpop_pcom.f79f699d7e&sd=bounces.netsuite.com&mid=1TEmAI-0005rC-9V"
    (in reply to end of DATA command)
TREOSTAsked:
Who is Participating?
 
thomasdavisCommented:
A handy ref guide to have on hand for some errors that you will see
http://www.answersthatwork.com/Download_Area/ATW_Library/Networking/Network__3-SMTP_Server_Status_Codes_and_SMTP_Error_Codes.pdf

SMTP Error 500 : The last command sent by your server
was not recognized as a valid SMTP or ESMTP command,
or is not formatted in the way the server expected. This
includes situations where the command is too long.
Note that commands that are recognized, but not
implemented, are handled by different status messages
(see 502 and 504).
Note : A “500 unrecognized command” server response
is often a case of antivirus software and/or firewall
interfering with incoming and/or outgoing SMTP
communications. Read your antivirus / firewall software
documentation thoroughly to solve the problem.
Examples of SMTP Error 500 error messages : “SMTP
Permanent Error: 500 Access Denied By Port Access” or
“SMTP Error 500 Line too long”.
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nitin_badhwarCommented:
Hi

What's the receipent address and what's the sender address ?
and if possible paste the Bounce Mail header

The link paste above is blocked in my country so cannot check.

Nitin
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Simon Butler (Sembee)ConsultantCommented:
Yes, I would agree - the remote site is rejecting the email for some reason. Unfortuantely their reason code doesn't work, so there is no way of knowing why.

Simon.
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tliottaCommented:
I'd forward it to postmaster@netsuite.com and ask what the deal is.

Tom
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TREOSTAuthor Commented:
Thanks for your input!
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