Information about DNS and network
i was reading rfc1035 (the DNS rfc) and came across this: Host name to address mappings were maintained by the Network information Center (NIC) in a single file (HOSTS.TXT) which was FTPed by all hosts. The total network bandwidth consumed in distributing a new version by this scheme is proportional to the square of the … Read More “Bandwidth usage before DNS” »
Using BIND, I have a lot of domains that have my DNS server assigned but don’t have DNS records on my server. Currently they get a denied response when queried, what I would like is for a default response to return a specific IP instead for all of them, all except domains that do exists … Read More “BIND: is it possible to have a default DNS response for all queries for domains that dont exist.” »
If I only need my domain for email, do I still need A/CNAME records? Or is MX only sufficient? Current setup is I have MX record pointing to various google domains (I use gmail), but I have a couple of A records from a long time ago, think I can just delete but wanted to … Read More “Do I need A/CNAME records for email?” »
I didn’t know this was a thing, but when I tried that Yandex Family DNS which blocks porn sites, I thought it will only give a different IP to be resolved for that domain, so that the browser cannot access the site, but actually Google Search results are also now excluding those sites from the … Read More “Google results are changing when DNS is changed.” »
submitted by /u/jedisct1 [link] [comments] Powered by WPeMatico
When logging into one of my workstations on a LAN system (offline). My user account logs in with a temporary profile and I don’t have access to the network share drive. submitted by /u/Budget-Meaning1721 [link] [comments] Powered by WPeMatico
submitted by /u/UnknownFluffi [link] [comments] Powered by WPeMatico
When I usually use ipleak there would only be 2 dns servers detected but it seems like it goes up to 8 and even 20, with it connecting to an entirely different state… what is happening? submitted by /u/NationalArmy2696 [link] [comments] Powered by WPeMatico
Hi everyone! So, my client has an issue where their emails are rebounded back to them after attempting to send an email to multiple user (CC). So far what I have done is on an external DNS server, I editted SPF records to include the line “include:_spf.google.com ~all” in SPF record configuration in external DNS … Read More “Fix Error 550-5.7.26 issue for my Microsoft Exchange 2016” »
I am an experienced computer user, but completely ignorant about DNS. I have a domain name, with a little webserver hosted by AWS, and email at that domain name served by gmail. I have no recollection of how I set all this up. I need to do a couple of things: 1) I see that … Read More “Need help with some basic DNS tasks” »