Link popularity is the total number of web pages and websites that link to a web page. Link popularity is used by search engines to compare sites and rank them in search results. Search results are important for Internet Businesses because a better rank brings more visitors to your website.
Is your email address is published on your website on Internet? This might be the reason for a lot of your spam.
You just got a bounce-back email saying that your email didn’t reach the destination because the recipient doesn’t exist. Nothing unusual, this is something that happens to anybody who is using email regularly; except you didn’t send that email. How could this happen? If you are an email server administrator and many of your users get this kind of bounce-back they all start to complain at once, thinking that your server has been hijacked. What can you do to stop this, and how to reassure your users that you haven’t been hijacked?