[dns-operations] Looping wildcard CNAMEs can be an obstacle for DANE, (googledomains.com-hosted example)

John Levine johnl at taugh.com
Tue Apr 17 19:51:04 UTC 2018


In article <C708D877-8BC6-45B9-86A2-6E6E382EEB8E at dukhovni.org> you write:
>  *.frasier.family. IN CNAME \@
>
>breaks email delivery to that domain from DANE-enabled Postfix or Exim.

Except that it has no MX and the A record host doesn't respond on port
25.  It's just broken.  Nothing to see here, move along.

-- 
Regards,
John Levine, johnl at iecc.com, Primary Perpetrator of "The Internet for Dummies",
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