Comment 7 for bug 875440

It does show the correct version:
root@server:~/# saslauthd -v
saslauthd 2.1.25
authentication mechanisms: getpwent pam rimap shadow

And there were no errors on restart of saslauthd or postfix

This output claims that sql is not a valid mechanism, but I passed --enable-sql to the configure script and I see

checking SQL... enabled
checking for mysql_select_db in -lmysqlclient... yes

in the configure output

Logs all show the same output, including my mysql log showing that it was never queried.