Re: [PHP3] CheckDNSRR failing on a valid domain

Manuel Lemos wrote: > > Hello Jason, > Could that be broken? Should I ask the ISP to fix it or this is a > tecnically legal situation? I don't know enough about it to be able to say that it definitely needs fixing, but I can say that it doesn't appear to be working properly for all lookups. I sent a test email to testuser@e-na.net to see if my mail server could find it and it connected and sent the email ok, so it's going to be hard to convince them there's something not quite if smtp servers connect ok. > >> How can I determine if mlemos@e-na.net is a valid address then. > > >Normally you should be ok - have you tried it with other domains? Try it > > Yes, they work. I was trying from the same machine where I have the domain > hosted. Could that influence the results? It can, depending on the hostnames of the machines and the records present in the DNS, so it's hard to say. > >with jason@qgl.org > >It should return 1 even though I'm not pointing the MX record at "qgl.org" > > Yes, that works fine. That's how I think it should be - you ask a domain for it's MX record, and the MX record returns the ip address kept in the MX record - but for some reason Php (and nslookup too) can't get that for e-na.net > Yes, but in this case there are MX records for www.e-na.net and not for > e-na.net . This is very odd. Probably because they're the same IP address - you query to www.e-na.net and you happen to get the same ip address as mail.e-na.net When I used nslookup to query the server for type MX on host mail.e-na.net, it spits out the MX record which does actually appear to mention "e-na.net" - but still it doesn't seem to work on just e-na.net It's a bummer because it makes it hard to check from Php unless you know the exact hostname the MX record appears to be bound to. jason