How to allow EAI - our solution

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Revision as of 16:05, 30 September 2019 by Titipong (talk | contribs) (Created page with "The SMTPUTF8 Extension (rfc6531 3.2) '''Condition''': If SMTPUTF8 is not supported by receiving SMTP server – it Must Not transmit. '''Recommendation''': *Transform...")
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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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