The fake "Yahoo.com Support Unit is carrying out a scheduled software update" below is a phishing scam. Therefore, recipients are asked not to follow the instructions in it. The fake email is being sent by cybercriminals who are attempting to trick their potential victims into clicking on the link in it, which goes to a fake Yahoo website.
If visitors to the website attempt to sign-in, there Yahoo credentials will be sent to the cybercriminals. The cybercriminals will use the stolen credentials to gain access to their potential victims accounts and use the accounts fraudulently.
The "Yahoo.com Support Unit Scheduled Software Update' Phishing Scam
From: 'sbcglobal.net' <noreplys@controlparks.com>
Sent: Friday, August 2, 2019 8:51 PM
Subject: mariettarealtors@sbcglobal.net - Suspension notification
Dear,
Yahoo.com Support Unit is carrying out a scheduled software update
As part of our ongoing efforts to secure your e-mail account.
Click here to Proceed
Failure to will lead to suspension of e-mail Account.
Thank You.
2019 Yahoo.com Operating Company, LLC. All Rights Reserved.
Yahoo users who have already been tricked by the phishing scam are asked to change their password before their accounts are hijacked and used fraudulentlh.