>Apr 30 10:58:18 SBSMTPNV03 postfix/smtpd[17554]: auxpropfunc error >invalid parameter supplied >Apr 30 10:58:18 SBSMTPNV03 postfix/smtpd[17554]: _sasl_plugin_load >failed on sasl_auxprop_plug_init for plugin: ldapdb I think these are benign. >This is what is shown in the postfix log: > >Apr 30 10:58:18 SBSMTPNV03 postfix/smtpd[17554]: warning: SASL >authentication failure: GSSAPI Error: Unspecified GSS failure. Minor >code may provide more information () >Apr 30 10:58:18 SBSMTPNV03 postfix/smtpd[17554]: warning: >nvit01b.EXAMPLE.com[10.20.2.0]: SASL GSSAPI authentication failed: >generic failure So this looks like the ticket is being passed to GSSAPI correctly, but (for whatever reason) GSSAPI isn't working. It's not clear to me that you actually got the same problem with sasl2-sample-server; you didn't show any GSSAPI messages from sasl2-sample-server. --Ken