AOL and Hotmail mystery
I am helping a retired friend with an email problem. Lets just say her email address is
Xyzw@AOL.com
Her contacts are suddenly receiving email from her for which the sender is Xyzw@hotmail.com.
She has not a hotmail account of any kind.
She is using a MacBook Pro and goes to the AOL web page to send and receive mail. When I sent an email to myself, it came from XyzW@aol.com. However, when I forwarded an email to myself which contained the Xyzw@hotmail.com address, even though I sent it from her AOL mail, when I received it, it appeared to be from Xyzw@hotmail.com and the Reply to: was also Xyzw@hotmail.com.
I poked around her settings and the reply to: was set to Xyzw@aol.com.
I sent an email from her account to someone who had previously received an email sent from Xyzw@hotmail.com. Again, in the Sent email box, the return address was Xyzw@hotmail.com.
As I understand it, hotmail is a Microsoft product.
I tried to take over this mysterious Xyzw@hotmail.com and was unable to. I really did not expect to but I figured if I could, I could change the password to something unguessable.
I am guessing that someone has obtained a copy of my friend's contact list and is also sending email apparently from Xyzw@hotmail.com. Or else, something has corrupted her computer in such a way that email that she is intending to send from Xyzw@aol.com is instead appearing as Xyxw@hotmail.com.
I am way past the extent of my own technical expertise. Should I advise her to go to an Apple store? Is there an email answer or a technical article online which would explain what it happening and how to stop it?
She is almost ready to give up on AOL but trying to change her address with all her contacts including her bank would be most daunting and frustrating.
MacBook Pro (2020 and later)