HTTP/1.1 401 
Content-Length: 0
Server: Microsoft-IIS/10.0 Microsoft-HTTPAPI/2.0
request-id: ea4a9350-dd48-40c3-b440-2c720097eff0
Www-Authenticate: NTLM
Www-Authenticate: Basic realm="mail.rcpb.bf"
x-feserver: VM-FCPB-MAIL
x-oauth-enabled: True
x-owa-version: 15.2.1748.26
x-powered-by: ASP.NET
x-soap-enabled: True
x-wssecurity-enabled: True
x-wssecurity-for: None
WWW-Authenticate: Negotiate
Date: Wed, 04 Mar 2026 08:16:27 GMT