ดูต้นฉบับสำหรับ How to allow EAI - our solution

The SMTPUTF8 Extension (rfc6531  3.2)


'''Condition''':
 If SMTPUTF8 is not supported by receiving SMTP server – it Must Not transmit.  


'''Recommendation''':
*Transform the Message
*Reject the Message
*Re queue later or try an alternate MX


'''Transform the Message'''

*Transformation are outside the scope of the RFC. Thus we Apply a Filter on the MTA (same way as SpamAssassin/ClamAv works) before sending the mail to the outgoing/final queue.
*Filter messages before sending
*Test the Recipient if it supports SMTPUTF8 extension 
*Rewrite the User and Domain based on Mapping System/Mail Alias
*Send the message normally


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