OBSOLETE THREAD - Read: https://community.superoffice.com/en/developer/apps-partners/develop/security-and-authentication/crm-online-security-enhancements/
The external IP for CRM Online is: 126.96.36.199
Outgoing traffic from CRM Online: IP 188.8.131.52
We recommend that your database MirroringClientService only allow CRM Online to call into it, but if you are exposing other web services that should only be accessible to CRM Online customers then this is the only IP address our calls will come from.
Old IP was: 184.108.40.206