Avast Renewal Emails from mail186-17.suw21.mandrillapp.com...Legitimate?

I just received and auto-renewal reminder email with a login and password in the text of the email. It was sent from mail186-17.suw21.mandrillapp.com. The link “…please log in to your secured Avast customer portal” in the body of the email takes me to this domain: https://avast-us.nexway.com/index.html?Langue=en_US&link=2#ectrans=1

Is this a legitimate avast site? Or is it phishing?

Thank you for your time.

See: https://www.avast.com/faq.php?article=AVKB24#idt_020