MN.IT DNS Request help page.
DNS Record Type Descriptions:
A Record - (Address
Record) points a domain or subdomain to an IP address. (RFC 1035)
Example
Syntax: test.mydomain.com A RECORD 156.1.12.99
A Record Round
Robin - like and standard "A Record" only a Host with Two or More IP
Addresses to give multiple servers the same service request like a cluster of
servers.
Example Syntax: test.mydomain.com A RECORD 156.1.12.99,
156.1.12.100, 156.1.12.101,
CNAME - (Canonical Name
Record) aka an aliases of another A record host name. (RFC 1035)
Example
Syntax: www.mywebsite.com CNAME my.webhostingserver.com
MX
- (Mail Exchanger Record) (MX record) is a type of resource record in the Domain
Name System that specifies a email server responsible for accepting email
messages on behalf of a recipient's domain
priority is used to determine
which servers get tried first by assigning values like 10, 20, 30, and so on.
(RFC 1035)
The lowest value gets highest
priority.
Example Syntax: mydomain.com MX 10 my.emailserver.com
OR
Multiple Email Servers
Example Syntax: mydomain.com MX 10 my.emailserver.com
Example Syntax: mydomain.com MX 20 my.backupemailserver.com
TXT
- (Text Record) Entry record was originally intended for human-readable text.
(RFC 1035)
These records are dynamic and can be used for several purposes.
SPF - (Sender Policy Framework Record) is an email
validation system designed to prevent email spam by detecting email spoofing,
a common vulnerability, by verifying sender IP addresses. (RFC 4408)
SRV - (Service Locator Record) points one domain to another
domain name using a specific destination port. (RFC 2782)
SRV records allow
specific services, such as VOIP or IM, to be directed to a separate location.
Example Syntax: _xmpp-server._tcp.gmail.com. IN SRV
5 0 5269 xmpp-server.l.google.com.
PTR - (Pointer
Record) PTR record is the reverse of an A record (Address Record).
That is,
it maps an IP address to a hostname, rather than host to IP address. (RFC 1035)
Given an IP address
of the form a.b.c.d, the usual form for a PTR record is this:
Example Syntax:
2.10.17.199.in-addr.arpa . PTR my.hostname.com. Reverse Record.
my.hostname.com A Record 199.17.10.2 Forward Record
NS -
(Name Server Record) Delegates a DNS zone to use the given authoritative name
servers. (RFC 1035)
---- DNS modifiers ----
TTL
- (Time to live) TTL is what dictates how long it will be until your computer
refreshes its DNS related information. (RFC791), (RFC1122) ?
The TTL default
vaule is ( 4 hours )
For further help, information, requests or problems please connect MN.IT Service's and open up a ticket and the NETWORK group will respond to your needs.
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