saslauthd internal error in k5support_verify_tgt

[Andreas Hasenack]

I'm running version 2.1.22beta and I'm getting this internal error in
saslauthd when used with kerberos5 authentication:

Mar 17 16:42:57 pandora saslauthd[6157]: auth_krb5: k5support_verify_tgt
Mar 17 16:42:57 pandora saslauthd[6157]: do_auth         : auth failure: [user=andreas] [service=ldap] [realm=MYCNC.COM] [mech=kerberos5] [reason=saslauthd internal error]

The KDC is heimdal, and the client (where saslauthd is running) is built with
MIT libs, could that be an issue? The Heimdal KDC doesn't seem to have a
problem with whatever saslauthd is requesting from it:

Mar 17 16:47:19 cs4 kdc[4163]: AS-REQ andreas at MYCNC.COM from IPv4:10.0.2.177 for krbtgt/MYCNC.COM at MYCNC.COM
Mar 17 16:47:19 cs4 kdc[4163]: Using aes256-cts-hmac-sha1-96/aes256-cts-hmac-sha1-96
Mar 17 16:47:19 cs4 kdc[4163]: Requested flags: renewable_ok
Mar 17 16:47:19 cs4 kdc[4163]: sending 565 bytes to IPv4:10.0.2.177