howto/EMail.md
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@@ -40,4 +40,13 @@ This should to the trick for sending mails via your DN42-IP
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### Receiving emails
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-The Domain mails should be received for has to be added to `mydestination =` in main.cf
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+The Domain mails should be received for has to be added to `mydestination =` in main.cf
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+
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+## New SMTP RFC SMTPUTF8
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+### EAI
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+Email Address Internationalization (EAI) as defined in [RFC 6531](http://tools.ietf.org/html/rfc6531) (SMTPUTF8 extension), [RFC 6532](http://tools.ietf.org/html/rfc6532) (Internationalized email headers) and [RFC 6533](http://tools.ietf.org/html/rfc6533) (Internationalized delivery status notifications).
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+### Postfix
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+Introduced with Postfix version 3.0, this fully supports UTF-8 email addresses and UTF-8 message header values.
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+more at the [SMTPUTF8_README](http://www.postfix.org/SMTPUTF8_README.html).
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+### Exim
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+Watch Exims EAI Tracker [Bug 1177](http://bugs.exim.org/show_bug.cgi?id=1177)
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