Per olof Ljungmark: > postfix/smtp[49073]: warning: SASL authentication failure: GSSAPI Error: > Miscellaneous failure (see text) (open(/tmp/krb5cc_125): No such file > or directory)
Postfix is the messenger that reports bad news from the SASL library. The name /tmp/krb5cc* is normally used to store a Kerberos ticket. Apparently, there is no such file. This is not really a Postfix error, but something that can happen with any Kerberos-based application. Wietse