These mails are considered as SPAM emails. This is because, when an user registers with any website, and the mail is being published/shown in any social networking site, it would be fetched by spammers. Which inturn results in such kind of email with the Failure notice.
This is used for many purposes by the spammers, it may be to get an virus to user's system, phishing attack, or even to confirm the email address to send newsletter / or even spyware.
So I would recommend you to have some computer security software, which will have Anti-Spam, Anti-Virus, Anti-spyware and firewall. In the first instance, run a virus scan and then install an anti-spam software, to stop spam emails.
Thanks ,
R.Yuvaraj
K7 Computing
The PRO in Protection
http://www.k7computing.com
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