Organizational Domain
Organizational Domain
- April 21, 2021
- Posted by: Nicola Selenu

DNS provides a hierarchical relationship between Internet domains. The organizational domain concept complements this by identifying the top-level or shortest domain that is still within a given organization. For instance Example Corp operates the domain example.com, and uses the sub-domains mail.example.com and news.products.example.com to send email to their customers. The organizational domain for both of these sub-domains would be example.com, because this is the shortest domain that remains within the same organization as mail.example.com and news.products.example.com. For more information about the organizational domain concept, please refer to Section 3.2 of RFC7489.
Author:Nicola Selenu
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Organizational Domain
DNS provides a hierarchical relationship between Internet domains. The organizational domain concept complements this by identifying the top-level or shortest domain that is still within a given organization. For instance Example Corp operates the domain example.com, and uses the sub-domains mail.example.com and news.products.example.com to send email to their customers. The organizational domain for both of these sub-domains would be example.com, because this is the shortest domain that remains within the same organization as mail.example.com and news.products.example.com. For more information about the organizational domain concept, please refer to Section 3.2 of RFC7489.
« Back to Glossary IndexAuthor:Nicola Selenu
Email Service Providers Handbook
The most comprehensive “Handbook of Email Service Providers“!
SPAMASSASSIN RULES
All SpamAssassin rules in one place, EXPLAINED!
SMTP COMMANDS
& REPLY CODES
All SMTP/ESMTP commands and reply codes in one place, EXPLAINED!
Free DNS Tool
Check the DNS records of your domain with our free DNS tool.
Deliverability Glossary
The most comprehensive Email Deliverability and Marketing Glossary!
« Back to Glossary Index