Is this a valid email from Adobe?
Dear User Name,
To reset your password, click this link.
For security purposes, this link will expire 72 hours from the time it was sent.
If you cannot access this link, copy and paste the entire URL into your browser.
The Adobe Team
Copyright 2017 Adobe Systems Incorporated. All rights reserved.
Adobe Systems Incorporated. All rights reserved. 345 Park Avenue, San Jose, CA 95110 USA
Seems to be, yes. Did you ask for a new password? If not, someone might be trying to log in under your account, so be careful.