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.
Robots.txt file getting a 500 error - is this a problem?
-
Hello all!
While doing some routine health checks on a few of our client sites, I spotted that a new client of ours - who's website was not designed built by us - is returning a 500 internal server error when I try to look at the robots.txt file.
As we don't host / maintain their site, I would have to go through their head office to get this changed, which isn't a problem but I just wanted to check whether this error will actually be having a negative effect on their site / whether there's a benefit to getting this changed?
Thanks in advance!
-
Hi Barry,
Thanks for your swift response on this. The pages certainly seem to be getting cached correctly, and when we initially took over the SEO and made wholesale changes to the site, there were huge improvements, so it looks for all the world like the main pages at least are being looked at.
But I think you make a good point about getting it solved anyway so we can identify any problems that may be occurring / will occur later.
-
robots.txt isn't a requirement, indeed it's only voluntarily followed by spiders (as in they can choose to ignore it), so I think you'll be fine without it. The default is to 'allow all' and 'follow, index', so they should still be crawling the site correctly.
Check in Webmaster tools by fetching as Googlebot or alternative find a page and put cache:pageurl.html into google and see if it's cached it correctly.
That said returning a 500 instead of a 404 may be causing an issue that isn't obviously apparent and 500 is a bit too generic a message to say specifically what, but I would try and solve it as quick as possible. The benefits will depends on what you put in your robots.txt file

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
-
GMB Bulk Upload Error
Hello! I am continuing to have issues with the bulk upload option.Currently, there are 12 non-verified locations in a location group in my GMB account. I have approximately 6-8 more that need to be added to this group via bulk upload. When uploading the spreadsheet, I receive an error reading "You've exceeded the limit for the about of locations you can upload to Google My Business in a single day. Try again later." It seems to happen specifically to the locations that aren't in my GMB account already. The others, the ones already in the account, are fine and simply read "No updates" when the bulk upload sheet is read. Everything else is marked as an error. Why is it marking some listings as nonviable when they come in via the bulk verification spreadsheet, which has been downloaded directly from the links Google has provided, and filled in with the help of the sample and amenities list?How do we finish uploading all of the remaining locations?I have another group, separate group (same company, groups split into US and International) under my name that may also need a bulk upload - what can I do to avoid this error in the future? Can they still be bulk uploaded to my account after I upload the first location group's listings?If you could provide any guidance, I'd be very grateful.Thanks in advance!
Technical SEO | | kmarsh0 -
Duplicate content and 404 errors
I apologize in advance, but I am an SEO novice and my understanding of code is very limited. Moz has issued a lot (several hundred) of duplicate content and 404 error flags on the ecommerce site my company takes care of. For the duplicate content, some of the pages it says are duplicates don't even seem similar to me. additionally, a lot of them are static pages we embed images of size charts that we use as popups on item pages. it says these issues are high priority but how bad is this? Is this just an issue because if a page has similar content the engine spider won't know which one to index? also, what is the best way to handle these urls bringing back 404 errors? I should probably have a developer look at these issues but I wanted to ask the extremely knowledgeable Moz community before I do 🙂
Technical SEO | | AliMac260 -
Good robots txt for magento
Dear Communtiy, I am trying to improve the SEO ratings for my website www.rijwielcashencarry.nl (magento). My next step will be implementing robots txt to exclude some crawling pages.
Technical SEO | | rijwielcashencarry040
Does anybody have a good magento robots txt for me? And what need i copy exactly? Thanks everybody! Greetings, Bob0 -
:443 - 404 error
I get strange :443 errors in my 404 monitor on Wordpress https://www.compleetverkleed.nl:443/hoed-al-capone-panter-8713647758068-2/
Technical SEO | | Happy-SEO
https://www.compleetverkleed.nl:443/cart/www.compleetverkleed.nl/feestkleding
https://www.compleetverkleed.nl:443/maskers/ I have no idea where these come from :S2 -
Blocked jquery in Robots.txt, Any SEO impact?
I've heard that Google is now indexing links and stuff available in javascript and jquery. My webmastertools is showing that some links are blocked in robots.txt of jquery. Sorry I'm not a developer or designer. I want to know is there any impact of this on my SEO? and also how can I unblock it for the robots? Check this screenshot:Â http://i.imgur.com/3VDWikC.png
Technical SEO | | hammadrafique0 -
Block Domain in robots.txt
Hi. We had some URLs that were indexed in Google from a www1-subdomain. We have now disabled the URLs (returning a 404 - for other reasons we cannot do a redirect from www1 to www) and blocked via robots.txt. But the amount of indexed pages keeps increasing (for 2 weeks now). Unfortunately, I cannot install Webmaster Tools for this subdomain to tell Google to back off... Any ideas why this could be and whether it's normal? I can send you more domain infos by personal message if you want to have a look at it.
Technical SEO | | zeepartner0 -
How do I get rid of rogue listings?
Unfortunately, Google has taken bits and pieces of my business and combined it with non-existent businesses and other rogue information. So now my business has 3 locations. One proper listing that I created and manage. One that uses my website address but nothing else is correct in the listing. One that contains my name(incorrectly), but the address and everything else about it is incorrect. I have reported these places many times but they continue to hang around and I am lost/confused on what to do next. Please advise.
Technical SEO | | dignan990 -
Should I set up a disallow in the robots.txt for catalog search results?
When the crawl diagnostics came back for my site its showing around 3,000 pages of duplicate content. Almost all of them are of the catalog search results page. I also did a site search on Google and they have most of the results pages in their index too. I think I should just disallow the bots in the /catalogsearch/ sub folder, but I'm not sure if this will have any negative effect?
Technical SEO | | JordanJudson0