Viktor Dukhovni: > On Wed, Sep 03, 2014 at 02:25:06PM +0200, Robert Sander wrote: > > > Sep 3 14:18:47 mailout1 postfix/smtp[30772]: warning: DANE TLSA lookup > > problem: Host or domain name not found. Name service error for > > name=_25._tcp.mail2.clarion-hotels.cz type=TLSA: Host not found, try again > > > $ host -t tlsa _25._tcp.mail2.clarion-hotels.cz > > _25._tcp.mail2.clarion-hotels.cz is an alias for clarion-hotels.cz. > > I don't see a CNAME, I get SERVFAIL:
Actually, this depends on your resolver. Search your favorite search engine for "DNSSEC wildcard". Many resolvers don't support this. Wietse