Information about DNS and network
Hi, Recently switched to G-suite from another provider, I have updated the DNS spf records and ensured dmarc and dkim settings are correct (with help from this forum) Things have been running smoothly except we get a “message not delivered 550 5.7.1 Sender ID (PRA) Not Permitted” response when trying to email one particular domain. … Read More “Sender ID (PRA) Not Permitted – should spf2.0/pra and v=spf1 contain the same IP/domains ?” »
Given an zone for domain example.com as defined: $TTL 86400 $ORIGIN example.com. @ 1D IN SOA ns1.example.com. hostmaster.example.com. ( 2019072201 3H 15 1w 3h ) IN NS ns1.example.com. IN NS ns2.example.com. ns1 IN A 192.168.0.1 ns2 IN A. 192.168.1.1 www IN A 192.168.0.2 is.this.allowed IN A 192.168.0.3 Full canonical name is.this.allowed.example.com exists as an … Read More “Multiple labels in left-hand-name relative to origin allowed?” »
Hi, We have a Sophos UTM9 Integrated Network Appliance in our office, which handles DHCP, DNS, VPN and our corporate firewall. DHCP clients are given the Sophos as the default gateway and DNS Server #1. They are given 1.1.1.1 for DNS Server #2. 50% of the time our office and VPN client web browser requests … Read More “Forcing internal resolution for local network addresses?” »
Hey guys, I setup DoH in the latest version of Firefox. According to https://www.dnsleaktest.com/ the only server resolving DNS queries is cloudflare. So, how is my ISP (Ziggo) still blocking piratebay? It’s not a cache or cookie thing. I can still only get there using a VPN. I thought DoH would prevent my ISP from … Read More “I’m using DoH. How does my ISP still block sites?” »
Hello geniuses and other smart people! My computer keeps sending DNS queries to my work domain. I think it got “infected” when i set up a VPN connection to work some time ago. How do i remove it? I’ve tried flushing DNS cache etc but it keeps querying every other minute or so. The … Read More “My computer sends A-record DNS queries to two different domains.” »
Can I change the existing setting of TCP to TLS on the existing NLB which is connect to internal ALB without any issues or do I need to consider any points … we are trying to make the change to capture client ip submitted by /u/vardhan1522 [link] [comments] Powered by WPeMatico
Looking to use a different DNS provider than my ISP because they block porn sites (lol). Firing up DNSBench, here are the results: https://i.redd.it/73ek3p5ukr931.jpg Seems like Cloudflare is far and away the fastest for cached, though for uncached and DotCom, they’re just around average. Ignoring UltraDNS and whatever NTT America is, Quad9 is the next … Read More “Cloudflare vs Quad9” »
I’ve been struggling to get my DNS records right for the past couple weeks because every time another issue appeared. After setting up SPF, DKIM, adding a PTR record and generally being confused, I still have problems with my mails getting rejected. Maybe someone can give me a general idea of what records I … Read More “DNS Setup for sending mail from a different server” »
I am trying to understand a possible issue with the host ipg1.moneris.com. Doing a lookup I get an answer, but also a failure % host ipg1.moneris.com ipg1.moneris.com is an alias for ipg1.dyn.moneris.com. ipg1.dyn.moneris.com has address 23.249.192.33 Host ipg1.moneris.com not found: 2(SERVFAIL) % % dig +trace ipg1.moneris.com ; DiG 9.14.1 +trace ipg1.moneris.com ;; global options: +cmd … Read More “response with occasional failure” »
For company abc.com (SITE A) we have url (connect.abc.com) set up for VPN connection in Palo alto. As of now , any fqdn resolves to abc.com company website, except connect.abc.com, which lands you into palo alto login. What will happen if i create another gateway at (Site B), connect2.abc.com, will i get correct ip for … Read More “Same address responding for all url in a domain, how do i get rid of such behavior?” »