2) Re-Check in SCCM Server if DNS publishing is enabled for all the intranet Management points. Hi , I have a couple of clients in an untrusted domain that i'm having a problem with, i can push the client to them but they will not get assigned to the site no matter what i do. Post to https://ABCCMG.CLOUDAPP.NET/CCM_Proxy_MutualAuth/XXXXXXX/ccm_system/ request failed with 0x87d00231. Completed searching client certificates based on Certificate Issuers CcmExec 24/08/2021 08:51:17 10708 (0x29D4) You can configure this DNS suffix on clients either during or after client installation: To configure clients for a management point suffix during client installation, configure the CCMSetup Client.msi properties. Allow clients to find proxy management points. So just to make sure the server is running the client and the client on that server is having issue.? 1) Check for the mpcontrol.logto check the Management Point status the below message suggest MP is working fine and healthy. If you use site server high availability, make sure to include the computer account of the site server in passive mode. Using default DNS suffix calor.co.uk LocationServices 23/08/2021 14:39:33 14956 (0x3A6C) [LOG[No lookup MP(s) from DNS]LOG]!>