Solved

DNS entry question

Posted on 2014-09-10
3
219 Views
Last Modified: 2014-10-09
Can someone explain to me the following DNS entry:

enews.member.sy.com. IN CNAME customers.esp1.co media.member.sy.com. IN CNAME media.esp1.co bounce.member.sy.com. IN MX 10 bounce.esp1.co bounce.member.sy.com. IN TXT “v=spf1 include:esp1.co -all”

key1._domainkey.member.sy.com IN TXT "k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCq4YJpb88e"
0
Comment
Question by:llarava
  • 2
3 Comments
 
LVL 13

Accepted Solution

by:
Ugo Mena earned 250 total points
ID: 40314823
Where did this come from? Reason for asking is the following is not just one DNS entry, but appears to be many, DNS records for the esp1.co and sy.com domains, however, the format in which these records appear is not correct.

A CNAME record is basically an alias for one domain to resolve to another domain. The proper way to enter these records is to enter the specific domain Name, the Type of record and the specific Value within your DNS server.

In any case, the information can be explained as follows:

IN CNAME customers.esp1.co media.member.sy.com.   ----means that customers.esp1.co is an alias to media.member.sy.co

IN CNAME media.esp1.co bounce.member.sy.com.   ----means that media.esp1.co is an alias to bounce.member.sy.com

IN MX 10 bounce.esp1.co bounce.member.sy.com.   ---- this does not seem correct but would indicate that bounce.esp1.co is the Mail Exchange record on file for enews.member.sy.com

IN TXT “v=spf1 include:esp1.co -all” ----this is the SPF record for sy.com, indicating that esp1.co should be allowed to send, with a soft fail on any email that does not pass this check.

key1._domainkey.member.sy.com IN TXT "k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCq4YJpb88e" is the email domain key for sy.com domain
0
 
LVL 20

Assisted Solution

by:netcmh
netcmh earned 250 total points
ID: 40314828
enews.member.sy.com. IN CNAME customers.esp1.co 
media.member.sy.com. IN CNAME media.esp1.co 
bounce.member.sy.com. IN MX 10 bounce.esp1.co 
bounce.member.sy.com. IN TXT “v=spf1 include:esp1.co -all” 
key1._domainkey.member.sy.com IN TXT "k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCq4YJpb88e" 

Open in new window


CNAME or "Canonical Name" Record is used to define an alias hostname
This defines enews.member.sy.com as an alias for the host customers.esp1.co
This defines media.member.sy.com as an alias for the host media.esp1.co

MX Record or Mail Exchange Record maps a domain name to a list of mail exchange servers for that domain.
bounce.member.sy.com will receive emails on behalf of bounce.esp1.co

TXT Record allows an administrator to insert arbitrary text into a DNS record. eg. Sender Policy Framework and DomainKeys specifications.
https://adminconsole.wiki.zoho.com/domains/SPF-Record.html
0
 
LVL 20

Expert Comment

by:netcmh
ID: 40370423
Thanks for the grade. Good luck.
0

Featured Post

PRTG Network Monitor: Intuitive Network Monitoring

Network Monitoring is essential to ensure that computer systems and network devices are running. Use PRTG to monitor LANs, servers, websites, applications and devices, bandwidth, virtual environments, remote systems, IoT, and many more. PRTG is easy to set up & use.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

This article explains in simple steps how to renew expiring Exchange Server Internal Transport Certificate.
This article lists the top 5 free OST to PST Converter Tools. These tools save a lot of time for users when they want to convert OST to PST after their exchange server is no longer available or some other critical issue with exchange server or impor…
To show how to generate a certificate request in Exchange 2013. We show this process by using the Exchange Admin Center. Log into Exchange Admin Center.:  First we need to log into the Exchange Admin Center. Navigate to the Servers >> Certificates…
The basic steps you have just learned will be implemented in this video. The basic steps are shown to configure an Exchange DAG in a live working Exchange Server Environment and manage the same (Exchange Server 2010 Software is used in a Windows Ser…

777 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question