Postfix无法对cyrus saslauthd进行身份validation。 但是，saslauthd本身愿意authentication。 我错过了什么？
从系统日志mail设备：
Aug 5 14:47:26 centos7-msa-test postfix/postfix-script[20286]: starting the Postfix mail system Aug 5 14:47:26 centos7-msa-test postfix/master[20288]: daemon started -- version 2.10.1, configuration /etc/postfix Aug 5 14:47:34 centos7-msa-test postfix/submission/smtpd[20291]: connect from client.example.com[192.0.2.2] Aug 5 14:47:34 centos7-msa-test postfix/submission/smtpd[20291]: Anonymous TLS connection established from client.example.com[192.0.2.2]: TLSv1 with cipher ECDHE-RSA-AES128-SHA (128/128 bits Aug 5 14:47:34 centos7-msa-test postfix/submission/smtpd[20291]: warning: SASL authentication failure: Internal Error -4 in server.c near line 1757 Aug 5 14:47:34 centos7-msa-test postfix/submission/smtpd[20291]: warning: SASL authentication failure: Internal Error -4 in server.c near line 1757 Aug 5 14:47:34 centos7-msa-test postfix/submission/smtpd[20291]: warning: SASL authentication failure: Internal Error -4 in server.c near line 1757 Aug 5 14:47:34 centos7-msa-test postfix/submission/smtpd[20291]: warning: xsasl_cyrus_server_get_mechanism_list: no mechanism available Aug 5 14:47:34 centos7-msa-test postfix/submission/smtpd[20291]: fatal: no SASL authentication mechanisms Aug 5 14:47:35 centos7-msa-test postfix/master[20288]: warning: process /usr/libexec/postfix/smtpd pid 20291 exit status 1 Aug 5 14:47:35 centos7-msa-test postfix/master[20288]: warning: /usr/libexec/postfix/smtpd: bad command startup -- throttling
saslauthdtesting：
# testsaslauthd -u $user -p $password -s smtp 0: OK "Success."
的smtpd.conf：
# cat /etc/sasl2/smtpd.conf` pwcheck_method: saslauthd mech_list: plain login
后缀sasl设置：
# postconf | grep -e cyrus_sasl -e smtpd_sasl cyrus_sasl_config_path = send_cyrus_sasl_authzid = no smtpd_sasl_auth_enable = yes smtpd_sasl_authenticated_header = no smtpd_sasl_exceptions_networks = smtpd_sasl_local_domain = smtpd_sasl_path = smtpd smtpd_sasl_security_options = noanonymous smtpd_sasl_tls_security_options = $smtpd_sasl_security_options smtpd_sasl_type = cyrus
所需的额外软件包cyrus-sasl-plain 。 你可以通过安装它
yum install cyrus-sasl-plain