sysremotelogins

Contains one row for each remote user allowed to call remote stored procedures on Microsoft® SQL Server™.

Column name	Data type	Description
remoteserverid	smallint	Remote server identification.
remoteusername	nvarchar(128)	User's login name on a remote server.
status	smallint	Bitmap of options.
sid	varbinary(85)	Microsoft Windows NT® user security ID.
changedate	datetime	Date and time the remote user was added.