send email using the virtual mailbox of my company domain

Until now I sent a mail through the application via GMAIL and everything was fine
Now I need to change this and send the email through a virtual mailbox like service@mydomain.com
What are my settings to give so that the sending works for me

it is the previous settings :
EMAIL_BACKEND = ‘django.core.mail.backends.smtp.EmailBackend’

EMAIL_HOST = ‘smtp.gmail.com

EMAIL_PORT = 587

EMAIL_USE_TLS = True

EMAIL_HOST_USER = ‘abcd@gmail.com’

EMAIL_HOST_PASSWORD = ‘mypassword’
now its outlook domain

ok ,
i maked as real mailbox and dont virtual and work fine