Duplicate incoming emails (Outlook)

Duplicate incoming emails (Outlook)

Hi there,

On Outlook i keep receiving incoming emails twice.

Example:

If you'll send mail to my core mail ( info@example.co.il) i'll receive it into the mailbox of info@example.co.il and it's alise mailbox alise@example.co.il

This is a very disturbing issue and i am not finding any solution for it.

How can we solve this problem?