What type of information is contained in a DNS MX record?

What type of information is contained in a DNS MX record?

A mail exchanger record (MX record) specifies the mail server responsible for accepting email messages on behalf of a domain name. It is a resource record in the Domain Name System (DNS).

What type of information does a resource record of type A contain?

A resource record, commonly referred to as an RR, is the unit of information entry in DNS zone files; RRs are the basic building blocks of host-name and IP information and are used to resolve all DNS queries. Resource records exist as many types to provide extended name-resolution services.

What is MX record?

http://en.wikipedia.org/wiki/Mx_record – A mail exchanger record (MX record) is a type of resource record in the Domain Name System that specifies a mail server responsible for accepting email messages on behalf of a recipient’s domain, and a preference value used to prioritize mail delivery if multiple mail servers …

What should an MX record look like?

An MX-record is simply a DNS-entry that tells the sending server (SMTP-server) where to deliver the email. A typical MX-record would look something like this: example.com. 3600 IN MX 0 mail.example.com.

What should MX record point to?

A mail exchanger (MX) record is a type of DNS record that identifies which server will handle your domain’s incoming mail. MX records always point to a domain, never to an IP address.

Which record is used by the client to get information from a server and also contains the domain name?

DNS
DNS (Domain Name System) records are what keeps the internet working the way consumers expect, and new records are being added as our needs grow. They’re what make a domain name such as ns1.com point to a webserver’s IP address like 104.131.

What is resource record set?

A record set (also known as a resource record set) is the collection of DNS records in a zone that have the same name and are of the same type. Most record sets contain a single record. However, examples like the one above, in which a record set contains more than one record, are not uncommon.

What does an A record contain?

What is a DNS A Record? An A record holds the most essential information about a domain: it contains the IP address associated with that domain. In other words, an A record has the instructions which connect the address of a computer through its hostname.

Can an MX record be an IP address?

No, MX records must not point to an IP address. MX records should point to address records (A or AAAA), domains, or hostnames.

What is MX and TXT records?

TXT record: This is used to store text-based information of the outside domain for the configured domain. MX record: This is used in mail delivery based on the configured domain. This is useful in redirecting email requests to the mail servers for a specified domain.

What are the resource records in DNS?

A resource record, commonly referred to as an RR, is the unit of information entry in DNS zone files; RRs are the basic building blocks of host-name and IP information and are used to resolve all DNS queries. Resource records come in a fairly wide variety of types in order to provide extended name-resolution services.

What are A records used for?

A Records. DNS records are used to control the location of a resource on the Internet. As an example, an A Record is used to point a logical domain name, such as “google.com”, to the IP address of Google’s hosting server, “74.125. 224.147”.

What is the difference between MX and resource records?

It is possible to configure several MX records, typically pointing to an array of mail servers for load balancing and redundancy. Resource records are the basic information element of the Domain Name System (DNS).

What is MX record in Domain Name System?

A mail exchanger record (MX record) is a type of certified and verified resource record in the Domain Name System that specifies a mail server responsible for accepting email messages on behalf of a recipient’s domain, and a preference value used to prioritize mail delivery if multiple mail servers are available.

What is the characteristic payload information of an MX record?

The characteristic payload information of an MX record is the fully qualified domain name of a mail host and a preference value. The host name must map directly to one or more address record (A, or AAAA) in the DNS, and must not point to any CNAME records.

What is the difference between a CNAME and an MX record?

CNAME records typically point to an A record (in IPv4) or AAAA record (in IPv6) for that domain. However, MX records have to point directly to a server’s A record or AAAA record. Pointing to a CNAME is forbidden by the RFC documents that define how MX records function.