Dovecot SMTPD Sasl 身份驗證錯誤：致命：沒有 SASL 身份驗證機制

我用Google搜尋了這個錯誤，但我讀過/嘗試過的任何東西都沒有——任何人都知道它是什麼

錯誤日誌：

Feb 23 22:35:36 localhost postfix/smtpd[5278]: connect from localhost.localdomain[127.0.0.1]
Feb 23 22:35:36 localhost postfix/smtpd[5278]: warning: SASL: Connect to smtpd failed: No such file or directory
Feb 23 22:35:36 localhost postfix/smtpd[5278]: fatal: no SASL authentication mechanisms
Feb 23 22:35:37 localhost postfix/master[5214]: warning: process /usr/libexec/postfix/smtpd pid 5278 exit status 1
Feb 23 22:35:37 localhost postfix/master[5214]: warning: /usr/libexec/postfix/smtpd: bad command startup -- throttling

後綴/main.cf：

queue_directory = /var/spool/postfix
smtpd_sasl_type = dovecot
smptd_sasl_path = private/auth
broken_sasl_auth_clients = yes
smtpd_sasl_auth_enable = yes
smtpd_sasl_authenticated_header = yes

dovecot/conf.d/10-master.conf：

 # Postfix smtp-auth
 unix_listener /var/spool/postfix/private/auth {
   mode = 0666
   user = postfix
   group = postfix
 }

Dovecot 在後綴中可用：

[root@localhost ~]# postconf -a
cyrus
dovecot

插座：

[root@localhost conf.d]# ls -l /var/spool/postfix/private/auth
srw-rw-rw-. 1 postfix postfix 0 Feb 23 22:46 /var/spool/postfix/private/auth

Telnet 立即超時：

[root@localhost ~]# telnet localhost 25
Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.
Connection closed by foreign host.

授權工作：

[root@localhost ~]# doveadm auth adrian
Password:
passdb: adrian auth succeeded
extra fields:
 user=adrian

作業系統：Centos 6.4 Dovecot：2.1.17 後綴：2.6.6

postconf -n 的編輯結果：

[root@localhost ~]# postconf -n
alias_database = hash:/etc/aliases
alias_maps = hash:/etc/aliases
broken_sasl_auth_clients = yes
command_directory = /usr/sbin
config_directory = /etc/postfix
daemon_directory = /usr/libexec/postfix
data_directory = /var/lib/postfix
debug_peer_level = 2
html_directory = no
inet_interfaces = localhost
inet_protocols = all
mail_owner = postfix
mailq_path = /usr/bin/mailq.postfix
manpage_directory = /usr/share/man
mydestination = $myhostname, localhost.$mydomain, localhost
mynetworks = 192.168.124.0/24 168.100.189.0/28, 127.0.0.0/8
newaliases_path = /usr/bin/newaliases.postfix
queue_directory = /var/spool/postfix
readme_directory = /usr/share/doc/postfix-2.6.6/README_FILES
relay_domains = hash:/etc/postfix/relay_domains
sample_directory = /usr/share/doc/postfix-2.6.6/samples
sendmail_path = /usr/sbin/sendmail.postfix
setgid_group = postdrop
smtpd_recipient_restrictions = permit_mynetworks        permit_sasl_authenticated        reject_unauth_destination
smtpd_sasl_auth_enable = yes
smtpd_sasl_authenticated_header = yes
smtpd_sasl_type = dovecot
transport_maps = hash:/etc/postfix/transport
unknown_local_recipient_reject_code = 550

如您所見，smtpd_sasl_path我們的輸出中沒有postconf -n

為什麼？答案很簡單。因為沒有smtpd_sasl_path套路。看看你的第一個片段：裡面有一個錯字。您寫了smptd_sasl_path = private/auth - 但 sm tp d 和 sm pt d之間存在差異。

因為 Postfix 沒有在哪裡找到套接字的資訊，所以 Postfix 聲稱“連接失敗”。

修復它，它會工作。:-)

最後：下次記住：postconf -n仔細閱讀並確保 Postfix 具有您認為 Postfix 應該具有的相同資訊，這始終是找出故障的重要步驟。

引用自：https://serverfault.com/questions/670895