If you need to configure a printer to scan to email and the client is using office 365 use the below settings

SMTP Server Name: theplanetforward-co-uk.mail.protection.outlook.com (Where this address is the MX record for the domain)

SMTP Port No. 25

SMTP Authentication: Off

SMTP Auth. Email Address: email@domain.com (If avaliable use a accout were the password will not change much at all as you will need to update this every time(Prefereably its own user account but most clients wouldnt pay))

SMTP Auth User Name: Username as displied in Office 365

SMP Auth Oassword: Password

SMTP Auth. Encryption: Inactive

The above settings relate to a Ricoh C multi function but i suspect this will work across all

Planet is used as an example