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Short for canonical name, also referred to as a CNAME record, a record in a DNS database that indicates the true, or canonical, host name of a computer that its aliases are associated with. A computer that hosts a Web site must have an IP address in order to be connected to the World Wide Web. The DNS resolves the computer’s domain name to its IP address, but there are cases when more than one domain name resolves to the same IP address, and this is where the CNAME is useful. A machine can have an unlimited number of CNAME aliases, but each alias must have a separate CNAME record in the database. | Short for canonical name, also referred to as a CNAME record, a record in a DNS database that indicates the true, or canonical, host name of a computer that its aliases are associated with. A computer that hosts a Web site must have an IP address in order to be connected to the World Wide Web. The DNS resolves the computer’s domain name to its IP address, but there are cases when more than one domain name resolves to the same IP address, and this is where the CNAME is useful. A machine can have an unlimited number of CNAME aliases, but each alias must have a separate CNAME record in the database. | ||
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<center>'''MX Record'''</center> | <center>'''MX Record'''</center> | ||
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And then the PTR record resolves 178.63.79.205 back to myidealhost.com: | And then the PTR record resolves 178.63.79.205 back to myidealhost.com: | ||
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<center>'''NS Record'''</center> | <center>'''NS Record'''</center> | ||
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For example, you can designate which hosts are authorized to send email originating from user@your-domain.com. Your recipient's servers will then check the SPF record to identify the origin of your message. | For example, you can designate which hosts are authorized to send email originating from user@your-domain.com. Your recipient's servers will then check the SPF record to identify the origin of your message. | ||
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Having SPF record set up will ensure that messages sent from users in your domain are not getting rejected by the recipient's domain. | Having SPF record set up will ensure that messages sent from users in your domain are not getting rejected by the recipient's domain. | ||
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