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?
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
s.net>: host mx01.twotrees.net[209.184.
550 USER REFUSED MESSAGE DATA:
(in reply to end of DATA command)