Hey r/DNS I’m a new sysadmin for a small business and I’ve encountered what I believe to be a strange DNS issue. Individual clients are unable to correctly resolve host names for servers inside our domain. This issue is intermittent and will only affect a single machine at a time, and I am unable to … Read More “DNS failing for Domain” »

submitted by danyork [link] [1 comment] Powered by WPeMatico

I’m attempting to create my own server, the goal was to make mini version of a professional platform (minus all the security enhancements) all i have left to do is host my own DNS but I’m having trouble finding any free DNS program that works. I tried Bind but that required an account and subscription … Read More “Locally Hosted DNS server?” »

I’m currently on opennicproject.org and saw someone in /r/sysadmin suggest https://dns.watch/index. I wanted to see if anyone else has used them and what their thoughts are. submitted by lbruiser [link] [1 comment] Powered by WPeMatico

I’ve been working on optimizing the outgoing mail from my virtual server. This server has several virtual domains which send and receive mail as well. I’ve been using the mail-tester.com service to check configurations, and I seem to be able to get 9 or 10 out of 10 on all my sites. However, there’s a … Read More “DMARC records” »

submitted by tabasselejambon [link] [1 comment] Powered by WPeMatico

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Hello, I did see a post (http://redd.it/2isn35) similar to this, but it doesn’t seem to be the same case. I get some random queries, but the frequency is way to low to be an attempt to a DDOS/DOS attack. Also, I thought that a “good” DNS amplification should be querying existing records (to ensure a … Read More “Curious random DNS queries” »