我使用 MariaDB 来存储 Dovecot 2.2.10 的用户。Dovecot 一直给出“意外断开连接”错误，我找不到原因。有什么我可以查看的吗？
邮件日志
Aug 29 22:46:15 xxxx postfix/qmgr[3467]: 544A8BB01: from=<>, size=4034, nrcpt=1 (queue active)
Aug 29 22:46:15 xxxx postfix/qmgr[3467]: 65FF1B94D: from=<<myemailaccont>@gmail.com>, size=2769, nrcpt=1 (queue active)
Aug 29 22:46:15 xxxx postfix/qmgr[3467]: CC292B999: from=<[email protected]>, size=411, nrcpt=1 (queue active)
Aug 29 22:46:15 xxxx dovecot: lmtp(1): Debug: none: root=, index=, indexpvt=, control=, inbox=, alt=
Aug 29 22:46:15 xxxx dovecot: lmtp(1): Connect from local
Aug 29 22:46:15 xxxx dovecot: auth: Debug: Loading modules from directory: /usr/lib64/dovecot/auth
Aug 29 22:46:15 xxxx dovecot: auth: Debug: Module loaded: /usr/lib64/dovecot/auth/libdriver_mysql.so
Aug 29 22:46:15 xxxx dovecot: auth: Debug: Module loaded: /usr/lib64/dovecot/auth/libdriver_sqlite.so
Aug 29 22:46:15 xxxx dovecot: lmtp(12025): Debug: none: root=, index=, indexpvt=, control=, inbox=, alt=
Aug 29 22:46:15 xxxx dovecot: lmtp(12025): Connect from local
Aug 29 22:46:15 xxxx dovecot: auth: Debug: Read auth token secret from /var/run/dovecot/auth-token-secret.dat
Aug 29 22:46:15 xxxx dovecot: auth: Debug: master in: USER#0111#[email protected]#011service=lmtp
Aug 29 22:46:15 xxxx dovecot: auth: Debug: master in: USER#0111#[email protected]#011service=lmtp
Aug 29 22:46:15 xxxx dovecot: lmtp(12027): Debug: none: root=, index=, indexpvt=, control=, inbox=, alt=
Aug 29 22:46:15 xxxx dovecot: lmtp(12027): Connect from local
Aug 29 22:46:15 xxxx dovecot: auth: Debug: master in: USER#0111#[email protected]#011service=lmtp
Aug 29 22:46:15 xxxx dovecot: auth-worker(12028): Debug: Loading modules from directory: /usr/lib64/dovecot/auth
Aug 29 22:46:15 xxxx dovecot: auth-worker(12028): Debug: Module loaded: /usr/lib64/dovecot/auth/libdriver_mysql.so
Aug 29 22:46:15 xxxx dovecot: auth-worker(12028): Debug: Module loaded: /usr/lib64/dovecot/auth/libdriver_sqlite.so
Aug 29 22:46:15 xxxx dovecot: auth-worker(12028): Debug: passwd([email protected]): lookup
Aug 29 22:46:15 xxxx dovecot: auth-worker(12028): passwd([email protected]): unknown user
Aug 29 22:46:15 xxxx dovecot: auth: Debug: password([email protected]): passdb doesn't support credential lookups
Aug 29 22:46:15 xxxx dovecot: auth-worker(12028): Debug: sql([email protected]): query: SELECT email as user, password FROM virtual_users WHERE email='[email protected]';
Aug 29 22:46:15 xxxx dovecot: lmtp(1): Error: userdb lookup([email protected]): Disconnected unexpectedly
Aug 29 22:46:15 xxxx dovecot: lmtp(12025): Error: userdb lookup([email protected]): Disconnected unexpectedly
Aug 29 22:46:15 xxxx dovecot: lmtp(12027): Error: userdb lookup([email protected]): Disconnected unexpectedly
Aug 29 22:46:15 xxxx dovecot: auth: Fatal: master: service(auth): child 12023 killed with signal 11 (core dumps disabled)
Aug 29 22:46:15 xxxx dovecot: auth-worker(12031): Debug: Loading modules from directory: /usr/lib64/dovecot/auth
Aug 29 22:46:15 xxxx dovecot: auth-worker(12031): Debug: Module loaded: /usr/lib64/dovecot/auth/libdriver_mysql.so
Aug 29 22:46:15 xxxx dovecot: auth-worker(12031): Debug: Module loaded: /usr/lib64/dovecot/auth/libdriver_sqlite.so
Aug 29 22:46:15 xxxx postfix/lmtp[12020]: 544A8BB01: to=<[email protected]>, relay=xxxx.com[private/dovecot-lmtp], delay=1782, delays=1782/0.02/0/0.06, dsn=4.3.0, status=deferred (host xxxx.com[private/dovecot-lmtp] said: 451 4.3.0 <[email protected]> Internal error occurred. Refer to server log for more information. (in reply to RCPT TO command))
Aug 29 22:46:15 xxxx dovecot: lmtp(1): Disconnect from local: Successful quit
Aug 29 22:46:15 xxxx dovecot: auth-worker(12031): Debug: passwd([email protected]): lookup
Aug 29 22:46:15 xxxx dovecot: auth-worker(12031): passwd([email protected]): unknown user
Aug 29 22:46:15 xxxx postfix/lmtp[12021]: 65FF1B94D: to=<[email protected]>, relay=xxxx.com[private/dovecot-lmtp], delay=1689, delays=1689/0.02/0.01/0.04, dsn=4.3.0, status=deferred (host xxxx.com[private/dovecot-lmtp] said: 451 4.3.0 <[email protected]> Internal error occurred. Refer to server log for more information. (in reply to RCPT TO command))
Aug 29 22:46:15 xxxx dovecot: lmtp(12025): Disconnect from local: Successful quit
Aug 29 22:46:15 xxxx postfix/lmtp[12024]: CC292B999: to=<[email protected]>, relay=xxxx.com[private/dovecot-lmtp], delay=1851, delays=1851/0.02/0.01/0.04, dsn=4.3.0, status=deferred (host xxxx.com[private/dovecot-lmtp] said: 451 4.3.0 <[email protected]> Internal error occurred. Refer to server log for more information. (in reply to RCPT TO command))
Aug 29 22:46:15 xxxx dovecot: lmtp(12027): Disconnect from local: Successful quit
Aug 29 22:46:15 xxxx dovecot: auth-worker(12036): Debug: Loading modules from directory: /usr/lib64/dovecot/auth
Aug 29 22:46:15 xxxx dovecot: auth-worker(12036): Debug: Module loaded: /usr/lib64/dovecot/auth/libdriver_mysql.so
Aug 29 22:46:15 xxxx dovecot: auth-worker(12036): Debug: Module loaded: /usr/lib64/dovecot/auth/libdriver_sqlite.so
Aug 29 22:46:15 xxxx dovecot: auth-worker(12036): Debug: passwd([email protected]): lookup
Aug 29 22:46:15 xxxx dovecot: auth-worker(12036): passwd([email protected]): unknown user
重要的部分是：
Aug 29 22:46:15 xxxx dovecot: auth-worker(12028): Debug: passwd([email protected]): lookup
Aug 29 22:46:15 xxxx dovecot: auth-worker(12028): passwd([email protected]): unknown user
Aug 29 22:46:15 xxxx dovecot: auth: Debug: password([email protected]): passdb doesn't support credential lookups
Aug 29 22:46:15 xxxx dovecot: auth-worker(12028): Debug: sql([email protected]): query: SELECT email as user, password FROM virtual_users WHERE email='[email protected]';
Aug 29 22:46:15 xxxx dovecot: lmtp(1): Error: userdb lookup([email protected]): Disconnected unexpectedly
Aug 29 22:46:15 xxxx dovecot: lmtp(12025): Error: userdb lookup([email protected]): Disconnected unexpectedly
Aug 29 22:46:15 xxxx dovecot: lmtp(12027): Error: userdb lookup([email protected]): Disconnected unexpectedly
Aug 29 22:46:15 xxxx dovecot: auth: Fatal: master: service(auth): child 12023 killed with signal 11 (core dumps disabled)
“不支持凭证查找”是什么意思？这是 MariaDB 或 Dovecot 的问题吗？
Dovecot 配置
[root@myhost ~]# doveconf -n
# 2.2.10: /etc/dovecot/dovecot.conf
# OS: Linux 3.10.0-1160.95.1.el7.x86_64 x86_64 CentOS Linux release 7.9.2009 (Core) ext4
auth_debug = yes
auth_mechanisms = plain login
auth_verbose = yes
mail_debug = yes
mail_location = maildir:/var/mail/vhosts/%d/%n
mail_privileged_group = mail
mbox_write_locks = fcntl
namespace inbox {
inbox = yes
location =
mailbox Drafts {
special_use = \Drafts
}
mailbox Junk {
special_use = \Junk
}
mailbox Sent {
special_use = \Sent
}
mailbox "Sent Messages" {
special_use = \Sent
}
mailbox Trash {
special_use = \Trash
}
prefix =
}
passdb {
driver = pam
}
passdb {
args = /etc/dovecot/dovecot-sql.conf.ext
driver = sql
}
service auth-worker {
user = vmail
}
service auth {
unix_listener /var/spool/postfix/private/auth {
group = postfix
mode = 0660
user = postfix
}
unix_listener auth-userdb {
mode = 0600
user = vmail
}
user = dovecot
}
service imap-login {
inet_listener imap {
port = 0
}
inet_listener imaps {
port = 993
ssl = yes
}
}
service lmtp {
unix_listener /var/spool/postfix/private/dovecot-lmtp {
group = postfix
mode = 0600
user = postfix
}
}
service pop3-login {
inet_listener pop3 {
port = 0
}
inet_listener pop3s {
port = 995
ssl = yes
}
}
ssl = required
ssl_cert = </etc/letsencrypt/live/xxxx.com/fullchain.pem
ssl_key = </etc/letsencrypt/live/xxxx.com/privkey.pem
userdb {
driver = passwd
}
userdb {
args = uid=vmail gid=vmail home=/var/mail/vhosts/%d/%n
driver = static
}
verbose_ssl = yes
MariaDB 表
该用户确实存在：
MariaDB [(none)]> SELECT * FROM mailserver.virtual_domains;
+----+--------------------+
| id | name |
+----+--------------------+
| 1 | xxxx.com |
| 2 | xxxx.xxxx.com |
| 3 | xxxx |
| 4 | localhost.xxxx.com |
+----+--------------------+
4 rows in set (0.00 sec)
MariaDB [(none)]> SELECT * FROM mailserver.virtual_users;
+----+-----------+--------------+----------------+
| id | domain_id | password | email |
+----+-----------+--------------+----------------+
| 1 | 1 | <mypassword> | [email protected] |
| 2 | 1 | <mypassword> | [email protected] |
+----+-----------+--------------+----------------+
2 rows in set (0.00 sec)
答案1
好吧，无论如何我解决了这个问题。但是，这实际上不是一个解决方案。我只是简单地将我的 dovecot 更新到最新版本（从 2.2.10 到 2.2.36）。我不知道为什么这样做有效（可能是因为某种超自然力量）。所以，如果有人知道为什么 dovecot 2.2.10 不能与 MariaDB 正常工作，请在下面回答。