Microsoft maintains its own block-lists for spam detection: Smart Network Data Services (SNDS). They are used on Hotmail.com, Live.com, Outlook.com, Office365.com and any custom domain hosted on the Microsoft mail servers. More information can be found here.
The Zabbix server at mon.foxinnovations.be can now be used to monitor your IP-address on those lists.
The zabbix template is made public on my ZabbixCustomTemplates project on GitHub.