SMTPD_USERS not working

[Jono007]

Either I am confused about how this is supposed to work, or it is not working. When I enter a value for
SMTPD_USERS (e.g. notblank:notblank ), I can still submit emails to postfix without any credentials and they are accepted and relayed. Is that expected behavior? Here are the relevant log entries:

postfix >> Setting smtpd sasl auth postfix >> Adding user SASL user: notblank Jul 19 06:06:22 saslpasswd2: error deleting entry from sasldb: BDB0073 DB_NOTFOUND: No matching key/data pair found Jul 19 06:06:22 saslpasswd2: error deleting entry from sasldb: BDB0073 DB_NOTFOUND: No matching key/data pair found Jul 19 06:06:22 saslpasswd2: error deleting entry from sasldb: BDB0073 DB_NOTFOUND: No matching key/data pair found Jul 19 06:06:22 saslpasswd2: DIGEST-MD5 common mech free smtp >> Info: "saslpasswd2: error deleting entry from sasldb: BDB0073 DB_NOTFOUND: No matching key/data pair found" can be ignored see https://github.com/cyrusimap/cyrus-sasl/issues/264