Halifax sent me an email telling me that access to my online account with them has been suspended due to a mismatch of information and that I should follow a link to enter my details to fix this.
BUT I don't even have an account with halifax let alone an online one!
No teak, especially considering the email address is clearly not of the banks and i know that they don't ask for info like that over the net. Plus if I did get a similar message from my bank, I'd try logging on first.
I had the same e-mail and as I have never banked with Halifax I left it in the junk folder where it was. My own bank never sends e-mails and if they did I would still direct them to junk. Sadly there are some people who will be fooled by it, no matter how many times you are told the warnings.