Am 02.01.2017 um 16:41 schrieb A. Schulze: > One may publish records like "v=spf1 a -all" for a host mail.example.org > > mail.example.org. A 192.0.2.25 > mail.example.org. AAAA 2001:db8::6:25 > mail.example.org. TXT "v=spf1 a -all" > > This require two or three dns lookups. (1x TXT, 1x A and 1x AAAA depending on > the spf implementation)
but this is asked only every refresh time defined in the SOA of the domain or? So if in the zone is 12 hours for refresh defined it will do 3 requests only once per 12 hours. The rest should be cached by the DNS server? Gruß Matthias -- "Programming today is a race between software engineers striving to build bigger and better idiot-proof programs, and the universe trying to produce bigger and better idiots. So far, the universe is winning." -- Rich Cook
