>>>Hi everybody,
>>>
>>>I noticed a strange behavior today - every time I reply all to a message somehow my email is also gets inserted into the reply and I end up receiving my own email.
>>>
>>>It started today and I'd like to fix this behavior to be as it used to be.
>>>
>>>Do you know what should I do to fix this?
>>
>>Maybe:
>>https://www.extendoffice.com/documents/outlook/1108-outlook-auto-cc.html
>>https://support.office.com/en-us/article/automatically-send-someone-a-copy-of-messages-that-you-send-0e8e32e9-777f-49fc-878f-41ed7c58677a
>
>Hi Al,
>
>I don't think I've added any new rules. My problem is the opposite. Every time I hit Reply All my own email is getting inserted. This is a new behavior started very recently, I believe. Prior to that when I hit Reply All I didn't get my own reply to myself.

Did you at least check in the places referenced in the links in case something got added inadvertently?