i have a mail server behind CloudFlare and when i check some logs and other DNS tools i seen a MX dc-abefc4aaxxxxx that isn't registered in my dns configuration in cloudflare. I tryed checking SOA and always shows cloudflare's name servers.
How can i really see where is this register being pushed?
Finally i solved this issue. Ocurrs when A record to Mail server is proxied and MX not. To solve this unproxy A record.
Here is the solution
https://support.cloudflare.com/hc/en-us/articles/360020296512-DNS-Troubleshooting-FAQ
Related
I have a WHM at Tilaa and a couple of domains with Godaddy.
I wanted to use pieronanni.it and pieronanni.com so I created a cPanel for pieronanni.it and added an alias for pieronanni.com, and in Godaddy I edited the server domains for pieronanni.com with ns1.pieronanni.com and ns2.pieronanni.com
The problem is that pieronanni.com does not work and this tools gives me this errors, is It a Godaddy configuration or WHM configuration?
I've tried editing the NS for pieronanni.com in WHM with ns1.pieronanni.com. and ns2.pieronanni.com. but nothing happened
Upon checking I could see that the nameserver for the domain pieronanni.it is using godaddy nameserver. And also I could see that some propagation delay for that domain.
ns81.domaincontrol.com
ns82.domaincontrol.com
And upon checking we could see that nameserver for that domain pieronanni.it is not resolving correctly.
ping ns2.pieronanni.com
ping: unknown host ns2.pieronanni.com
So first you need to create a custom nameserver.
Step 1: Point the server IP to your custom nameserve in registrar end.
Step 2: Add the custom nameserver in your WHM edit DNS zone and point NS1 and NS2 to server IP.
Please check.
In this moment, I am learning how the DNS and domains resolutions work and I have a question.
Let's take a.test.com for example.
As I understand it, first of all, the intermediary ISP DNS server is called. If it has the domain IP in cache, it returns it. Otherwise, it does consecutively these following tasks :
It calls a root DNS server which returns a com DNS server IP
It calls that top level DNS server which returns the test.com DNS server IP
It calls that DNS server to finally get a.test.com's IP
Is it correct ?
And now what does it happen when we resolve a.b.c.test.com ?
Does it call another DNS server or does the c.test.com's DNS server contain the a.b.c.test.com's IP ?
Thanks
Yes, you are pretty much correct. Nothing different will happen in next steps: c.test.com will respond with a referral to more authoritative server (the one for b.c.test.com), or if itself is authoritative then it will respond with an answer.
After moving to the new server, for sure, I need to change the DNS settings at Cloudflare to the new server IP address.
Cloudflare control panel can show the new ip address that I've setup, but when doing some dig command, the ip address returned still the old one. Although I already request directly to the ns specified by Cloudflare.
here is my dig command:
dig thedomain.tld #cfns.ns.cloudflare.com
Strangely, when I pause the cloudflare, I can see the new ip from dig command above.
any hint to solve that ?
It actually sounds like you may be running into some recursive DNS caching issues. We push out IP changes that are made in your DNS settings very quickly (minutes or less), but it may take a little longer to push out everywhere.
I've transfered a domain from 1and1.com to OVH, now I need to manage my DNS to point them to a new server, but running this command from here
command line> nslookup
> set querytype=soa
> mydomain.com
I found out that DNS are still managed from 1and1.
Reading the OVH guide about DNS i found out that i need to activate DNS zone from my manager. But... won't this conflict with the DNS declared on 1and1?
I'm not sure about how is this working, so does someone knows the right workflow to do this?
Thanks in advance
after a call with OVH Support the correct workflow is:
Create or configure the DNS zone
Change the DNS Server to the OVH server
in 24 hours all should work fine, I'll let you know...
I have a VPS from myhosting.com with Plesk 11. I've set up dns in windows plenty of times but for the life of me I can't seem to get this working through Plesk. Here are my settings through Plesk and Godaddy... I asked myhosting about the setup and they said as far as they can see it seems correct but for the life of me the site will not resolve... Any help would be much appreciated!!
Plesk:
GoDaddy Host Names:
GoDaddy Nameserver Settings:
Enter your domain name here http://who.godaddy.com/ and in results:
Check "status" - should be ACTIVE
Check "Name Servers" it should be ns1.v...v.com, ns2.v...v.com
Check that ns1.v...v.com or ns2.v...v.com can be resolved by command:
nslookup ns1.v...v.com
I suppose that it will be NOT resolved because your NS servers are placed in zone which can be resolved yet.
The easiest way is to use some another DNS servers, maybe GoDaddy or some other DNS hoster.
Or you can make a trick:
change domain's DNS servers to GoDaddy DNS servers
In GoDaddy's domain management panel add in DNS zone records with: ns1.v...v.com, ns2.v...v.com
Wait until you can resolve ns1.v...v.com and ns2.v...v.com - it's about 24 hours.
Switch domain's DNS server back to ns1.v...v.com and ns2.v...v.com.
Wait until changes will be visible by other DNS servers like Google:
nslookup ns1.v...v.com 8.8.8.8
All should works now.