Thanks Tom

That's a good point.  Part of my problem lies in the number of URL's with parameters (thousands).  Applying status codes of any type isn't really viable.

Starting to see the url's clean up with the addition of the entries in robot.txt.

Regards

Ian

OK Might have a solution that would at least work for my situation.

Since implementing SEF URL's on the site I have no real need for any URL's with parameters.  By adding the following to robots.txt it should prevent any indexing of old pages or pages with parameters.

Disallow: /index.php?*

Tested it in webmaster tools with some of the offending URL's and it seems to work.  I'll wait until the next indexing and post back or mark it as answered.

Thanks all for you help

A little more information and maybe a little more advice required.

Since fixing the malware http://domain.com/index.php?vc=201&Cheap_Adobe_Acrobat_xi and similar are actually no longer pages.  Joomla actually sees anything after ? as a parameter and just ignores it because it no longer matches a page and hence the reason it just defaults to the home page http://domain.com/index.php.  This is Joomla and probably most other content management systems default behavior.  The problem here lies in the fact that google indexed that page when it was infected and it remains in the index because to google it sees a status code of 200 when re-indexing this page.

The problem is now a bit broader and has more ramifications than first thought.  Any pages from the previous system that used parameters would receive a 200 status code and remain in the index.  Checking url parameters in web master tools confirms this with various paramaters showing thousands of url's monitored.  Keep in mind google is showing a message that there are no problems with parameters for this site.

So the advice I need now is related to url parameters in Web Master tools.  The new site uses SEF URLS and so makes much less use of paramaters.  How can I ensure that the old redundant pages with parameters are dropped from the index.  This would involve thousands of 301's or 404's let alone trying to work them all out.  There is a reset link for each parameter in webmaster tools but not much documentation as to what it does.  If I reset all the parameters would that clean up the index?

I'd be interested in what others think about this issue because I feel that this might be a common problem with cms based platforms and after major changes, thousands of paramater based url's just defaulting to home and other pages probably affects the site and page ranking.

Ian

You're right, I guess I was focused on the index.  Moz isn't showing any external links to these pages and neither is webmaster tools.  My feeling is that google is retaining them for some reason, maybe just the keywords in the url?

I've checked the source of the visits and they are only coming form google searches for "cheap adobe" and the like.  The original malware used the site to get these searches into the index and then direct them to other sites/pages.

Being a Zeus server it doesn't use htaccess, my task would be a lot simple if it did.  It has an alternative rewrite file but documentation is scarce on using it for 404's.

I'll keep researching.

Thanks Paul

I've checked analytics and the only source of these url's is google organic searches, not external sites.  I think unfortunately my problem is the dynamic nature of Joomla and a combination of a number of factors that are causing it to do this in an SEO unfriendly way.

I think my biggest challenge is getting the URL's to 404 before I submit them to the web master removal tool (which my research tells me needs to be done before you submit).  I think I read there might be a robots.txt option so I'll look into that.

Ian

Thanks Alan

This seems to be done by the combination of Joomla/Zeus and the redirection manager.  No longer infected, the only visits are from organic searches from google and it's been a couple of months.  Whatever the reason Joomla feels it shouldn't 404 these pages and just displays (not 301 redirects them) to the home page.

My feeling is that these URL's in the index and the visits from them probably aren't doing the site any good.

Thanks Dave

I think this might be a good option but I have a couple of problem with trying to achieve this.  It's a joomla cms running on a zeus server with a Search Engine Friendly URL plugin running.  I think that is possibly the worst combination of technologies for SEO in history.  The combination of url rewrites in zeus and the redirection manager in Zeus just display the home page with the dodgey URL and give it a 200 status code.  I think this is why google is taking so long to drop it from the index.

Ian

Hi All

Upgraded a Joomla site for a customer a couple of months ago that was infected with malware (it wasn't flagged as infected by google).  Site is fine now but still noticing search queries for "cheap adobe" etc with links to http://domain.com/index.php?vc=201&Cheap_Adobe_Acrobat_xi in web master tools (about 50 in total).  These url's redirect back to home page and seem to be remaining in the index (I think Joomla is doing this automatically)

Firstly, what sort of effect would these be having on on their rankings?  Would they be seen by google as duplicate content for the homepage (moz doesn't report them as such as there are no internal links).

Secondly what's my best plan of attack to fix them.  Should I setup 404's for them and then submit them to google?  Will resubmitting the site to the index fix things?

Would appreciate any advice or suggestions on the ramifications of this and how I should fix it.

Regards, Ian