Re: [PHP3] CheckDNSRR failing on a valid domain

> Hello, > > I have been trying to use CheckDNSRR and GetMXRR to validate e-mail > addresses. I have just realized that these calls fail when checking > the top level domain e-na.net . However they succeed on checking > www.e-na.net and even point e-na.net as MX host for it. > > I wonder how could this be because I am able to send a message to addresses > like mlemos@e-na.net . > > Anyway, if these calls may fail this way on valid mail hosts I'm afraid > the functions are useless for the purpose of verifying e-mail addresses. > > Anybody with knowledge in the subject would care to give some light on the > matter? They seem to work fine for me - remember they returns records for a host, not for a domain, as explained in the manual If you do a whois on e-na.net you can get the name servers for it, then use nslookup to see what records actually exist: whois e-na.net shows the primary name server for e-na.net is NS1.ADGRAFIX.COM nslookup > server NS1.ADGRAFIX.COM Default Server: NS1.ADGRAFIX.COM Address: 208.230.130.254 > set type=a # Check for an A record: > e-na.net Server: NS1.ADGRAFIX.COM Address: 208.230.130.254 Name: e-na.net Address: 208.230.136.197 > set type=mx # heck for an MX record on e-na.net (which is what you're asking Php to do) > e-na.net Server: NS1.ADGRAFIX.COM Address: 208.230.130.254 *** No mail exchanger (MX) records available for e-na.net > # Now check for MX record on mail.e-na.net (that's the first hostname I'd try and guess) > mail.e-na.net Server: NS1.ADGRAFIX.COM Address: 208.230.130.254 mail.e-na.net preference = 10, mail exchanger = e-na.net e-na.net nameserver = ns1.adgrafix.com e-na.net nameserver = ns2.adgrafix.com e-na.net nameserver = ns3.adgrafix.com e-na.net internet address = 208.230.136.197 ns1.adgrafix.com internet address = 208.230.130.254 ns2.adgrafix.com internet address = 63.70.212.254 ns3.adgrafix.com internet address = 208.28.6.254 So according to nslookup diagnostics, the function is working correctly in Php jason