lucy24 - 7:41 am on Nov 1, 2013 (gmt 0)
As far as the indix.html - none of MY pages are called indix.html - so my guess is that Mangoway is calling example.com/indix.html and my server redirects it to www.example.com/indix.html and issues a 404. There's no referrer.
Whoops! I completely misread the original post. So it's their typo, not yours.
Do you have any ErrorDocument directives of your own? The happiest solution at this point would be discovering that the last time the host tweaked the software, they mistyped "405" instead of "404". Then everyone on the server would be getting this mistake! But an ErrorDocument statement in your own htaccess overrides a server-wide one. So you can simply put in a line of your own and see if the whole "405.shtml" issue goes away.
Your unwelcome visitor would be hard pressed to click on anything if they're not even arriving on a page :)
Is the offending IP blocked? The most recent logs should then show 403 instead of 404. There may or may not still be a preceding 301, depending on whether the domain-name redirect originates in the config file or in htaccess.