HTTP/1.1 401 
Content-Length: 0
Server: Microsoft-IIS/10.0 Microsoft-HTTPAPI/2.0
request-id: 38eff817-18f9-4e54-aa19-08294769b81b
Www-Authenticate: NTLM
Www-Authenticate: Basic realm="mail.rcpb.bf"
x-owa-version: 15.2.1748.26
WWW-Authenticate: Negotiate
Date: Wed, 04 Mar 2026 08:16:42 GMT