outgoing email, name error on address

outgoing email, name error on address

HI,
For some reason, I cant change the name displaying in front of my outgoing email address.
Originally, I had put SADEH777 as user Name and lator I changed it to "Econoprix" once I realized that name is automatically posted in front of all outgoing emails. but even though on the setting screen I see the right name, on outgoing messages it still shows "sadeh777 < admin@econoprix.com>" can you please help me fix this?
thank you