The email message below with the subject: "Re: authentication," is a phishing scam. The email message was not sent by Sky Mail, but by cyber-criminals, to trick the recipients into clicking on the link within it, which will take them to a phishing website. On the phishing or fake website, the recipients will be asked to sign-in with their Sky Mail user name and password, but once they do so, their username and password will be sent to the cyber-criminals behind the phishing scam. Once the cyber-criminals have received their victims' email account credentials, they will hijack the accounts and use them fraudulently.
The Phishing Sky Mail Email Message
From: SKY [mailto:email@example.com]
Sent: 16 December 2015 08:23
Subject: Re: authentication
Sky! SERVICE ANNOUNCEMENT
Dear [email address removed],
We have placed a temporal hold on two incoming mails to your account due to failed authentication.
To continue receiving messages, please follow address/secure% %$messages %center and validate your account.
This helps us stop automated programs from sending junk email.
All files on your Sky mail including (Inbox, Sent, Spam, Trash, Draft) will be deleted and access to your Sky Email address will be Denied.
The recipients of the phishing email message, who were tricked into clicking on the link and have attempted to sign into the phishing or fake website, are asked to change their Sky Mail passwords immediately. If the same persons are unable to change their passwords, they are asked to contact Sky.