: My colleague can't visit our website through her provider after long downtime We did a frontpage update some days ago that caused the site to crash. The site was down for several hours. After
We did a frontpage update some days ago that caused the site to crash. The site was down for several hours. After troubleshooting, we concluded that we needed to cache more content. It had been run too many queries.
After solving that and rebooting of server, we here in Sweden and Norway were again able to visit the site. But a colleague in Tunisia couldn't. It seems to work from another internet provider but not her own.
What could have happened? And what should we do?
Edit: I should add: She is able to visit the site through tunnel at anonymouse.org.
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First of all I would try and find out exactly what she means by 'couldn't visit the site'.
It white screened / 404'ed / google reported 'can not connect to domain.com' etc etc
If they are at all technical you could try and get the HTTP headers that should contain a lot more info that can give you clues.
Check your DNS on a free service such as who.is/dns/yourdomain.com on the assumption that all is the same and configured correctly.
Also this is quite a nice tool to check on the global status of your dns - www.whatsmydns.net/
If so I might hazard a guess its a caching issue - probably off your site. ISP level or locally on her machine.
I assume she has done the trusty server side refresh plenty of times (ctrl+f5 on a PC).
Also you can purge the local DNS cache on a windows machine run/cmd then from the command line ipconfig/flushdns - that has worked for me before.
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