hi, I can access my site through webbrowser.. but i can access throug any software or any SE submission script.. i submitted to entireweb se and they gave error 500 (means internal server error).. when i used Xenu to find broken links i got same error.. when i used any scripts of software to generate sitemap or to analyse the website i am getting same error.. dont know wats wrong.. contacted web host but they are unable to sort it out.. please guys.. My site is www.arcade-portal.com My serp and everything gone down..
What do your error logs state? If yours are clear, then ask the host to check the main error logs to see what is flagging the 500 error.
Sorry i really don't know what type of error you told, please take an instance, i have used the Xenu and found it very easy to modify the error.