From RFC-2831 a realm name can contain whitespace, this means using space as the delimiter for possible realms is incorrect --------------------------------------------------------------------------------------------------------------------------- Key: SASL-11 URL: https://issues.jboss.org/browse/SASL-11 Project: JBoss SASL Provider Issue Type: Bug Security Level: Public(Everyone can see) Reporter: Darran Lofthouse Assignee: Darran Lofthouse Fix For: 1.0.4.CR1 By using space as the separator a single realm name that contains a space is split into two realms. Either support quoted realm names if they contain a space or choose a different delimiter - (A different delimiter other than a control character may be difficult as the rest can appear in a realm name)