Am 04.04.2011 01:27, schrieb Vincent Lefevre: > On 2011-04-01 23:51:39 +0200, mouss wrote: >> we're not asking them to resolve their hostname. we're only asking them >> to use a "real" name. it's as easy as >> myhostname = joe.example.com >> >> with a "joe.example.com" that exists in DNS. > > But the purpose of having a host in DNS is to be able to resolve it. > I mean: you can't have a real hostname in the DNS if it is on a private > network (unreachable because of NAT), can you? Well... I'm not sure. > See below
why not? * you have a public ip * make a a-record in some domain to this ip * your isp have a ptr for this ip * myhostname = your a-record EHLO/HELO, A, PTR are matching where is the problem?
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