Your SMTP Server, Port and User depend on the mail service your company is using.
For example, if your company is using gmail as mails service then you will be able to find all SMTP settings here. The password is either from your email or from your domain.
Please note that if you have a 2-Step Verification in a gmail-account, you might need to allow less secure apps to access your account
If you are using Outlook or any other email service provider then, you can get SMTP information from system administrators of your company.
For any clarification, please contact our Priority Support.