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| dns records |
After creating DNS records, we have to wait for the propagation of DNS entries minimum 24 hour. There is popular website mxtoolbox through which we can verify & check the DNS records (https://mxtoolbox.com) In this blog I will describe you how to create DNS records. I already bought Domain Name online.
The following records are need to require in DNS Management
- A Records
- MX Records
- TXT Records
- PTR Records
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| a records |
Pls see the screenshots
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| A Record |
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| A Record |
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| A Record |
MX Records – MX stands for Mail Exchanger, It allows or permit the email server ( hmailServer, Microsoft Exchange) to accept email messages on the behalf of recipient’s domain (mypcsupport.online). We can create multiple MX records with priority or preference (0,10,20…) value. MX records with lowest priority value (0) will have the highest preference for delivering mail messages.
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| mx record |
Pls see the screenshots
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| MX Record |
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| MX Record |
TXT Records – TXT stands for Text, It contains the information about domain in human readable format. It prevent the mail server from spamming, spoofing, phishing & provide the authentication. There are three types of txt records which are mandatory.
- SPF Record
- DKIM Record
- DMARC Record
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| txt records |
Pls see the screenshots
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| TXT Records |
SPF – Sender Policy Framework -- It prevents from spammers to send unauthorized messages on the behalf of domain, It authorize or permit mail server to send messages.
Name: Domain_Name
| Value: v=spf1 ip4:Public_IP_Address -all |
Pls see the screenshots
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| SPF Records |
DKIM -- Domain Keys Identified
Mail – It provide proper authentication means email messages are being
sent from trusted source. It uses key combination private & public key. I
use website https://www.port25.com/dkim-wizard/ to generate DKIM keys.
- Public key is used in DNS records (Domain Panel)
- Private key is used in Mail Server software
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| hMailServer |
Pls see the screenshot to generate the keys
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| DKIM Record |
Type the domain name & selector, Use 1024 key size then click on "CREATE KEYS"
Selector == dkim
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| DKIM Record |
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| DKIM Record |
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| DKIM Record |
Name: dkim._domainkey
| Value: v=DKIM1; t=s; k=rsa; p=Public_Key |
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| DKIM Record |
DMARC -- Domain-based Message Authentication Reporting and Conformance
It is the last records in DNS managent which must be created
after creating SPF & DKIM. It verify & check the email messages are
protected by SPF & DKIM records.
Name: _dmarc
Value: v=DMARC1; p=none; rua=mailto:postmaster@domain-name
Name: _dmarc
Value: v=DMARC1; p=none; rua=mailto:postmaster@domain-name
Pls see the screenshot
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| DMARC Record |
PTR Records – stands for Pointer
records (Reverse DNS), It link Public IP Address to Domain Name( mypcsupport.online
) or hostname ( mail.chansongroup.in ). We cannot create PTR records in DNS
management, we have contact ISP to create PTR records. I had contacted ISP, I told
them I am going to setup email server in my office, they ask me Public IP
Address & domain name. They took 24 hour to create PTR records. IF you are
using VPS or AWS then you don’t need to worry they automatically create the ptr
records.
Now its time to verify & check the DNS Records after 24 hour
Open the mxtoolbox website https://mxtoolbox.com
A Record
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| mxtoolbox |
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| mxtoolbox |
MX Record
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| mxtoolbox |
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| mxtoolbox |
TXT Record -- SPF
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| mxtoolbox |
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| mxtoolbox |
TXT Record -- DKIM
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| mxtoolbox |
Click on "more information"
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| mxtoolbox |
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| mxtoolbox |
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| mxtoolbox |
TXT Record -- DMARC
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| mxtoolbox |
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| mxtoolbox |
You can watch full video tutorial how to setup email server for local office
hMailServer -- DNS Records -- Part-1
hMailServer -- Publish Mail Server -- Part-2
Thank You
