when I send an Email , the sender name , show a wrong name!

Greeting

I am new to Zoho and just opened an account to have my personal email with a business domain. I has entered my Name as an owner of the mail as [ Alireza. T ] , But for an unknown reason , when I send an Email to someone, it shows that Email has been

screen shot of the issue

sent from [ logan ] not from [Alireza. T] !

could you please help me to correct this issue.

thanks