I’ve been working on figuring out issues with our Windows DNS server set up with records disappearing… basically too aggressive settings. If our lease is 24hrs, and we set no refresh to 12hrs and refresh to 12hrs as recommended, then what would be a good value for scavenging? Default is 7 days it seems. Would … Read More “Scavenging gets set to how long?” »

What are the pros and cons of using AdGuard Pro versus NextDNS on iOS? submitted by /u/CaptainP25 [link] [comments] Powered by WPeMatico

submitted by /u/celestial2011 [link] [comments] Powered by WPeMatico

So here’s the deal, I inherited this system and although my background is in networking, my know how with Infoblox + DNS is limited. My predecessor was in the process of upgrading our IB boxes when he got let go abruptly. Now it’s all mine lol! Both old and new boxes are in prod. It’s … Read More “Infoblox upgrade help” »

I am trying to use SPF Macros. 1) to workaround the 10 DNS LOOKUP limit ​ 2) restrict the use of some eMail service to prevent SPOOFING ​ I want to do something simple as my 1st test Suppose I want to only restrict the use of mass-email-provider.com to one address, [sales@mydomain.com](mailto:sales@mydomain.com) I though I … Read More “SPF Macros question” »

I’m a website designer that also does reseller hosting. I’ve set up a lot of servers over the past 25+ years, but have an oddball problem. Client has their domain registered with GoogleDomains (yeah, I know about Squarespace taking over operations… One thing at a time) Hosting is on my apache server Email is hosted … Read More “PTR issues with Office365 and GoogleDomains” »

I came across a record on a client’s domain recently that was something I had not seen before. It seems to validate, but I am unsure why it would be configured this way. Does anyone know what the purpose of this would be? They are basically a Google Workspace user. They have two TXT records … Read More “SPF Record Include and DNS Question” »

This is something I asked in another group but I think this subreddit is the place to ask ​ Surge in eMail traffic, DMARC aggregate reports reported it… 2 days later 😉 NORMAL I found really cool that my new DMARC Online reporting provider (uriports) reported a surge in email traffic, cool. I didn’t expected … Read More “Best / different ways to get Live Feedback on Spoofing attack” »

Hello I forgot to turn off DNSSEC when transferring my domain and now nothing is resolving. How do I fix this? Do I just need to wait it out? submitted by /u/XxXBOBBY99ASXxX [link] [comments] Powered by WPeMatico

On dnscheck.tools, it no longer gives my ipv4 address on my verizon wireless dns or my isp ipv4 dns. This happens on all my devices. It started a few days ago. It does give them on cloudflare, quad9, and all other public dns that I’ve tried. Why is this? submitted by /u/kdbtiger [link] [comments] Powered … Read More “dnscheck.tools no longer gives ipv4 dns for Verizon” »