Moz Q&A is closed.
After more than 13 years, and tens of thousands of questions, Moz Q&A closed on 12th December 2024. Whilst we’re not completely removing the content - many posts will still be possible to view - we have locked both new posts and new replies. More details here.
Preventing CNAME Site Duplications
-
Hello fellow mozzers!
Let me see if I can explain this properly.
First, our server admin is out of contact at the moment,
so we are having to take this project on somewhat blind. (forgive the ignorance of terms).We have a client that needs a cname record setup, as they need a sales.DOMAIN.com to go to a different
provider of data. They have a "store" platform that is hosted elsewhere and they require a cname to be
sent to a custom subdomain they set up on their end.My question is, how do we prevent the cname from being indexed along with the main domain? If we
process a redirect for the subdomain, then the site will not be able to go out and grab the other providers
info and display it. Currently, if you type in the sales.DOMAIN.com it shows the main site's homepage.
That cannot be allow to take place as we all know, having more than one domain with
exact same content = very bad for seo. I'd rather not rely on Google to figure it out.Should we just have the cname host (where its pointing at) add a robots rule and have it set to not index
the cname? The store does not need to be indexed, as the items are changed almost daily.Lastly, is an A record required for this type of situation in any way?
Forgive my ignorance of subdomains, cname records and related terms. Our server admin being
unavailable is not helping this project move along any. Any advice on the best way to handle
this would be very helpful! -
It is pointing to the other server now. We have it blocked from indexing on that end, just wanted to make sure that was enough.
-
No,
it is because you are pointing sales to a different sever, it seems to me that you don't have your dns set up correctly. you don't want sales pointing to your main website. -
So does this work better because Google will not show an IP address in search results?
-
You need to point your cname to the ip of the server that hosts your sales.domain.com
don't
Do
sales.domain.com > 123.123.123.123
where 123.123.123.123 is the ip of the hosting webserver.
-
Hello David,
I think with the robots rule (there are many examples out there) should be more than enough in your case! take a look at this helpful article: http://moz.com/community/q/block-an-entire-subdomain-with-robots-txt
I hope that was helpful! Sorry about my English... I'm Spanish
Luis
Got a burning SEO question?
Subscribe to Moz Pro to gain full access to Q&A, answer questions, and ask your own.
Browse Questions
Explore more categories
-
Moz Tools
Chat with the community about the Moz tools.
-
SEO Tactics
Discuss the SEO process with fellow marketers
-
Community
Discuss industry events, jobs, and news!
-
Digital Marketing
Chat about tactics outside of SEO
-
Research & Trends
Dive into research and trends in the search industry.
-
Support
Connect on product support and feature requests.
Related Questions
-
Why is this site ranked #1 in Google with such a low DA (is DA not important anymore?)
Hi Guys, Would you mind helping me with the below please? I would like to get your view on it and why Google ranks a really new domain name #1 with super low domain authority? Or is Domain Authority useless now in Google? It seems like from the last update that John Mueller said that they do not use Domain Authority so is Moz Domain Authority tool not to take seriously or am I missing something? There is a new rehab in Thailand called https://thebeachrehab.com/ (Domain authority 13)It's ranked #1 in Google.co.th for these phrases: drug rehab thailand but also for addiction rehab thailand. So when checking the backlink profile it got merely 21 backlinks from really low DA sites (and some of those are really spammy or not related). Now there are lots of sites in this industry here which have a lot higher domain authority and have been around for years. The beach rehab is maybe only like 6 months old. Here are three domains which have been around for many years and have much higher DA and also more relevant content. These are just 3 samples of many others... <cite class="iUh30">https://www.thecabinchiangmai.com (Domain Authority 52)</cite>https://www.hope-rehab-center-thailand.com/ (Domain Authority 40)https://www.dararehab.com (Domain Authority 32) These three sites got lots of high DA backlinks (DA 90++) from strong media links like time.com, theguardian.com, telegraph.co.uk etc. (especially thecabinchiangmai.com) but the other 2 got lots of solid backlinks from really high DA sites. So when looking at the content, thebeachrehab.com has less content as well. Can anyone have a look and let me know your thoughts why Google picks a brand new site, with DA 13 and little content in the top compared to competition? I do not see the logic in this? Cheers
White Hat / Black Hat SEO | | igniterman75
John0 -
Is this campaign of spammy links to non-existent pages damaging my site?
My site is built in Wordpress. Somebody has built spammy pharma links to hundreds of non-existent pages. I don't know whether this was inspired by malice or an attempt to inject spammy content. Many of the non-existent pages have the suffix .pptx. These now all return 403s. Example: https://www.101holidays.co.uk/tazalis-10mg.pptx A smaller number of spammy links point to regular non-existent URLs (not ending in .pptx). These are given 302s by Wordpress to my homepage. I've disavowed all domains linking to these URLs. I have not had a manual action or seen a dramatic fall in Google rankings or traffic. The campaign of spammy links appears to be historical and not ongoing. Questions: 1. Do you think these links could be damaging search performance? If so, what can be done? Disavowing each linking domain would be a huge task. 2. Is 403 the best response? Would 404 be better? 3. Any other thoughts or suggestions? Thank you for taking the time to read and consider this question. Mark
White Hat / Black Hat SEO | | MarkHodson0 -
The use of a ghost site for SEO purposes
Hi Guys, Have just taken on a new client (.co.uk domain) and during our research have identified they also have a .com domain which is a replica of the existing site but all links lead to the .co.uk domain. As a result of this, the .com replica is pushing 5,000,000+ links to the .co.uk site. After speaking to the client, it appears they were approached by a company who said that they could get the .com site ranking for local search queries and then push all that traffic to .co.uk. From analytics we can see that very little referrer traffic is coming from the .com. It sounds remarkably dodgy to us - surely the duplicate site is an issue anyway for obvious reasons, these links could also be deemed as being created for SEO gain? Does anyone have any experience of this as a tactic? Thanks, Dan
White Hat / Black Hat SEO | | SEOBirmingham810 -
How would you optimize a new site?
Hi guys, im here to ask based on your personal opinion. We know in order to rank in SEO for a site is to make authority contents that interest people. But what would you do to increase your ranking of your site or maybe a blog post? leaving your link on blogs comment seem dangerous, nowadays. Is social media the only way to go? Trying to get people to write about you? what else can be done?
White Hat / Black Hat SEO | | andzon0 -
A site is using their competitors names in their Meta Keywords and Descriptions
I can't imagine this is a White Hat SEO technique, but they don't seem to be punished for it by Google - yet. How does Google treat the use of your competitors names in your meta keywords/descriptions? Is it a good idea?
White Hat / Black Hat SEO | | PeterConnor0 -
Site dropped suddenly. Is it due to htaccess?
I had a new site that was ranking on the first page for 5 keywords. My site was hacked recently and I went through a lot of trouble to restore it. Last night, I discovered that my site was nowhere to be found but when i searched site: mysite.com, it was still ranking which means it was not penalized. I discovered the issue to be a .htaccess and it have been resolved. My question is now that the .htaccess issue is resolved , will my site be restored back to the first page? Is there additional things that i should do? I have notified google by submitting my site
White Hat / Black Hat SEO | | semoney0 -
Closing down site and redirecting its traffic to another
OK - so we currently own two websites that are in the same industry. Site A is our main site which hosts real estate listings and rentals in Canada and the US. Site B hosts rentals in Canada only. We are shutting down site B to concentrate solely on Site A, and will be looking to redirect all traffic from Site B to Site A, ie. user lands on Toronto Rentals page on Site B, we're looking to forward them off to Toronto Rentals page on Site A, and so on. Site A has all the same locations and property types as Site B. On to the question: We are trying to figure out the best method of doing this that will appease both users and the Google machine. Here's what we've come up with (2 options): When user hits Site B via Google/bookmark/whatever, do we: 1. Automatically/instantly (301) redirect them to the applicable page on Site A? 2. Present them with a splash page of sorts ("This page has been moved to Site A. Please click the following link <insert anchor="" text="" rich="" url="" here="">to visit the new page.").</insert> We're worried that option #1 might confuse some users and are not sure how crawlers might react to thousands of instant redirects like that. Option #2 would be most beneficial to the end-user (we're thinking) as they're being notified, on page, of what's going on. Crawlers would still be able to follow the URL that is presented within the splash write-up. Thoughts? We've never done this before. It's basically like one site acquiring another site; however, in this case, we already owned both sites. We just don't have time to take care of Site B any longer due to the massive growth of Site A. Thanks for any/all help. Marc
White Hat / Black Hat SEO | | THB0
