Author: firstdns

submitted by danyork [link] [comment] Powered by WPeMatico

For nearly a month now, my domain (brinckerhoff.org) has been DNSBL’ed by sbcglobal.net MX hosts: XXXXX@sbcglobal.net: host al-ip4-mx-vip2.prodigy.net[144.160.235.144] said: 553 5.3.0 alph167 DNSBL:RBL 521< XXX.XXX.XXX.XXX is_blocked._For_information_see_http://att.net/blocks (in reply to MAIL FROM command) (NB: XXX’s replace actual text, but if you have half a brain you can just look up my MX record…) I’ve filled out … Read More “DNSBL — what do the pros do?” »

submitted by cmeerw [link] [3 comments] Powered by WPeMatico

Hello in https://www.reddit.com/r/dns/comments/38scdv/looking_for_just_a_dnssec_dns_provider_not_a/ I asked for a dnssec hosting service as joker my registrar can do dnssec but not using joker nameservers. I had a slightly odd experience with some dmarc records and one supplier who was using windows software and told me that my html form on there website would not allow me to … Read More “Update on joker and secure dns implementation -war stories and working dnssec” »

So we’ve got a bit of a strange thing happening in our network at the moment. There’s been an increasing number of PCs begin to appear as though they are offline (our users receive an email to the department that the offline PC is in) despite them being online with full network access. It looks … Read More “Seemingly random PCs not registering with DNS” »

submitted by kajolmg [link] [comment] Powered by WPeMatico

I have a bind server setup on my home LAN. There is a private tld for my local network and I have a forwarder setup for my work domain so that I can forward those lookup over a VPN to get the internal view in our split DNS setup there. That’s pretty much it.. simple. … Read More “Non-optimal results from local caching server to CDN's?” »

http://dnsviz.net/d/n4zxt.com/dnssec/ why does this happen. Is it possible that I need to wait a day or two before all is good? submitted by thomasb9511 [link] [11 comments] Powered by WPeMatico

Hi All, So I’m a complete newb when it comes to this. I’m simply trying to set up email with a custom domain (name@company.com), so far I succesfully purchased a $12/year domain thru Google Domains. Now I’m trying to use Google Apps for business to set up the email. I do NOT have a website, … Read More “Newb Alert: I just bought a domain from Google Domains, and have no idea how to set up email with it. I've added forwards, but am getting stuck using Google's instructions 🙁 Details inside!” »

i’m trying to physically locate 200+ machines on my network, and to make things a bit easier i’m trying to find the hostnames first (the computers are generally named for their location) but the ping -a command randomly fails, with no rhyme or reason to it. it doesn’t give me an error message, and the … Read More “why would ping -a randomly fail?” »