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27 lines
963 B
Markdown
27 lines
963 B
Markdown
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# Introduction
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This how-to is created by the Dutch Internet Standards Platform (the organization behind [internet.nl](https://internet.nl)) and is meant to provide practical information and guidance on explicitly configuring a parked domain not to use e-mail.
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# Null MX
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Explicitly configure an 'empty' MX record according to [RFC7505 ](https://tools.ietf.org/html/rfc7505).
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`example.nl IN MX 0 .`
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# DMARC
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`DMARC p=reject`
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# DKIM
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`selector._domainkey IN TXT "v=DKIM1; p="`
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# SPF
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`example.nl IN TXT "v=spf1 –all"`
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# Other tips and tricks
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* Don't use an A or AAAA record for parked domains.
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* Don't redirect from a parked domain to the used domain, since this encourages users to keep using the parked domain name.
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* If a redirect is used, make sure to use the proper redirect order in order for HSTS headers to remain effective:
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1. redirect from HTTP to HTTPS on the same (sub)domain.
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2. when using HTTPS, redirect to another (sub)domain.
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