I’m looking for something that works similarly to mDNS, for example: New host is created, it makes a DNS entry for itself using some dynamic method (Like RFC 2136), and it has to periodically “announce” that it’s still alive. When the host gets deleted, the record would “expire” and eventually get purged from DNS. Does … Read More “Is there an ephemeral resource record?” »

Join us for an AMA with our SVP of Intelligent Edge Engineering, Dr. Liz Borowsky (u/lizborowsky). Liz keeps the internet running smoothly, is a former Assistant Professor of Computer Science at Boston College, and has written about Distributed Theory, Algorithms, and Distributed Storage. Ask her anything about the internet, keeping ahead of capacity demands, pursuing … Read More “Hey r/dns! Upcoming AMA Alert: Akamai’s SVP of Intelligent Edge Engineering will be answering your questions on 5/14 in r/IAmA.” »

I am building a SaaS where my users can “host” their own static website To achieve this goal, I use a straightforward lambda@edge function that parses the host header and parses it to redirect to the right folder of an S3 bucket, it’s basically the same setup as this https://stackoverflow.com/questions/49812706/serving-a-multitude-of-static-sites-from-a-wildcard-domain-in-aws. For example, user.example.com/index.html will show … Read More “Vanity domain to subdomain Host header problem” »

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Hello, I hope I’m in the right place, because I have a very specific question. I changed my mail provider (own domain) and so far everything is fine. Only MTA-STS is missing. To solve this, I just need to host a txt file at https://mta-sts.[domain]/.well-known/mta-sts.txt. The rest is done by DNS records, which I can … Read More “[Mail Security] Workaround for MTA-STS hosting?” »

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

I’ve been trying to update the authoritative DNS for a particular zone at Network Solutions, and they seem to be unable to publish the change – their Advanced DNS tool shows that they have the correct DNS servers in the tool, but MXToolbox still returns the old servers, as does dig from outside the zone. … Read More “Network Solutions and auth DNS” »

seeing occasional dns issues with some laptops at remote sites. we have 8 locations connected to main site via ipsec tunnels, basic hub and spoke network. so, at the main site, should I have reverse lookup zone for the remote subnets? I never have in the past, but here lately we seem to be having … Read More “reverse dns question on remote connected sites” »

My ISP uses a crappy DNS server that goes down at random hours of the day and unfortunately, their router changes the DNS back to it whever I attempt to change it. Would changing my computers DNS to something like 8.8.8.8 or 1.1.1.1, make a difference? Also would this introduce additional latency or slowdowns as … Read More “Would using another dns on my computer although the dns on the router is fixed to the crappy ISP dns make a difference?” »

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