We are running the stock Apache 2.4 using Debian jessie. We see these sorts of log entries in our syslog:
2016-07-31T05:22:12.647897-07:00 www1 apache2: GSSAPI client step 1
Some searching suggests that these are generated by the Cyrus SASL libraries with the log level set too high. Is there any way to configure the Cyrus SASL libraries (or Apache) to suppress these messages?