SNDS - FAQ - postmaster. hotmail. com That is, the command "RCPT TO:<example@hotmail com>" requests Outlook com's servers to respond with whether it will accept mail for example@hotmail com, information which is invaluable to spammers trying to compile recipient lists for future spamming
Smart Network Data Services - postmaster. hotmail. com Outlook com Smart Network Data Services Deliverability to Outlook com is based on your reputation The Outlook com Smart Network Data Services (SNDS) gives you the data you need to understand and improve your reputation at Outlook com But just looking at the data isn't enough! Maintaining a good reputation is a lot of work You should use this data to keep your mailing lists clean and to