Hi Mahesh. I would like to try and help you with this. I would need to know what your main IP is. If you are not comfortable with posting your IP here, please send me an email with the IP to linda.pagillo@mailsbestfriend.com and I will be happy to research the issue and try to resolve it. Once I resolve it, I will post the solution here as well as via direct email to you. Thanks.

Thanks Linda. the issue has been fixed. I used windows process monitor, filter it, got the sender iis pool pid then find the wordpress spam script in iis log. now it is fixed. Thanks a lot for my call.