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The following changes have been rolled out to production:
- When you use FastMail's nameservers for your DNS, one of the default
records we publish is an SPF
record. Until now, we've published this as a TXT DNS record type and a SPF DNS record type type.
- SPF DNS record types have been deprecated (http://tools.ietf.org/html/rfc7208#section-3.1) for a while, so we've now removed the SPF DNS record type and are only publishing TXT DNS records types.
- This shouldn't affect anyone, but we've put up this post as
informational for anyone experiencing some
issue with ancient software or systems.