Why Am I Getting Replies To Old Emails In My Yahoo Mail Account

[Galaxy1965]

Every few months I am getting out of office replies or mail undelivered messages from old emails that I send over a year ago in my Yahoo email account. I checked to see if my account was hacked but when I checked recent sign-in activity it did not show anything untoward. I checked the Send messages but it does not show any of these emails being sent so why am I getting these messages in my Inbox.
Can any one tell me why this is happening and how to stop it?
Thanks in advance.

[Tuvok]

I used to get a message that I had read and deleted constantly reappearing!

It eventually stopped.


I hate the new Yahoo - but since I've had my yahoo address since the mid 90's .....

[kjn2]

Sorry cant answer but Just to be on the safe side change your password.