Content-Transfer-Encoding: binary X-Mailer: MIME-tools 5.507 (Entity 5.507) Message-ID: Content-Disposition: inline Content-Type: text/html; charset="utf-8" X-RT-Interface: Web X-RT-Original-Encoding: utf-8 MIME-Version: 1.0 References: RT-Send-CC: Content-Length: 213 Ticket 8897 solves part of this problem, by passing through gss_localname() in SPNEGO.  If an application passes in the reported actual_mech() to gss_localname() then there still may be an issue.