如何解決dovecot默認domian的認證問題？
以前用dovecot＋postfix做的個郵件系統，現在換了extmail的系統，想通過extmail的收取其他pop3信箱的郵件功能，把老信箱的郵件導入進來，添加了老的帳號后卻一直不能成功接收。但是可以收取其他比如sohu信箱的pop3的郵件。單獨用foxmail等也可以通過pop3收取老郵件伺服器的郵件。用telnet老的郵件伺服器發現問題：
用用戶名@域名無法登錄110埠
# telnet 192.168.10.4 110
Trying 192.168.10.4...
Connected to 192.168.10.4.
Escape character is '^]'.
+OK dovecot ready.
user myuser@mydomain
+OK
pass mypass
-ERR Authentication failed.
只用用戶名可以登錄110埠
# telnet 192.168.10.4 110
Trying 192.168.10.4...
Connected to 192.168.10.4.
Escape character is '^]'.
+OK dovecot ready.
user myuser
+OK
pass mypass
+OK Logged in.
.
但是extmail系統強制pop3帳號必須是用戶名@域名的形式。
老郵件伺服器的dovecot 的配置文件如下
# cat dovecot.conf |grep -v "#"
protocols = pop3 imap imaps
imap_listen = [::]
pop3_listen = [::]
login_dir = /var/run/dovecot-login
login = imap
login = pop3
mbox_locks = fcntl
auth = default
auth_mechanisms = plain
auth_userdb = passwd
auth_passdb = pam
auth_user = root
#
以前這個老的郵件伺服器域名是：mail.ourdomain.net.cn 現在改名為oldmail.ourdomain.net.cn 老郵件伺服器裡面hosts文件和機器名字都已經更改為old……並且重啟過
求助……
[ 本帖最後由 arbor 於 2009-1-11 09:50 編輯 ]
《解決方案》
參考：http://www.iredmail.org/wiki/index.php/IRedMail-doc-MySQL-0.2-Dovecot
在文檔中搜索 auth_default_realm 參數：
auth_default_realm = iredmail.org
《解決方案》
原帖由 MichaelBibby 於 2009-1-11 10:05 發表 http://bbs.chinaunix.net/images/common/back.gif
參考：http://www.iredmail.org/wiki/index.php/IRedMail-doc-MySQL-0.2-Dovecot
在文檔中搜索 auth_default_realm 參數：
auth_default_realm = iredmail.org
多謝！
# Space separated list of realms for SASL authentication mechanisms that need
# them. You can leave it empty if you don't want to support multiple realms.
# Many clients simply use the first one listed here, so keep the default realm
# first.
#auth_realms =oldmail.ourdomain.net.cn
# Default realm/domain to use if none was specified. This is used for both
# SASL realms and appending @domain to username in plaintext logins.
auth_default_realm = oldmail.ourdomain.net.cn
重啟dovecot，再用extmail收信，故障依舊！看日誌：
Jan 11 13:23:32 oldmail dovecot: Killed with signal 15
Jan 11 13:23:32 oldmail dovecot: Dovecot starting up
Jan 11 13:24:31 oldmail pop3-login: Aborted login [::ffff:192.168.100.2]
《解決方案》
打開 dovecot 調試模式，檢查日誌
《解決方案》
原帖由 MichaelBibby 於 2009-1-11 13:04 發表 http://bbs.chinaunix.net/images/common/back.gif
打開 dovecot 調試模式，檢查日誌
這個……我好像不會打開調試模式……慚愧……
《解決方案》
在/etc/dovecot.conf文件裡面搜索debug看下
《解決方案》
原帖由 arbor 於 2009-1-11 12:55 發表 http://bbs.chinaunix.net/images/common/back.gif
多謝！
重啟dovecot，再用extmail收信，故障依舊！看日誌：
應是要註釋掉auth_default_realm
《解決方案》
dovecot.conf說明：
# There are a few special variables you can use, eg.:
#
# %u - username
# %n - user part in user@domain, same as %u if there's no domain
# %d - domain part in user@domain, empty if there's no domain
# %h - home directory
#
#passdb pam {
#
# [<service name>]
#
# session=yes makes Dovecot open and immediately close PAM session. Some
# PAM plugins need this to work, such as pam_mkhomedir.
#
# setcred=yes makes Dovecot establish PAM credentials if some PAM plugins
# need that. They aren't ever deleted though, so this isn't enabled by
# default.
#
# cache_key can be used to enable authentication caching for PAM
# (auth_cache_size also needs to be set). It isn't enabled by default
# because PAM modules can do all kinds of checks besides checking password,
# such as checking IP address. Dovecot can't know about these checks
# without some help. cache_key is simply a list of variables (see
# doc/wiki/Variables.txt) which must match for the cached data to be used.
# Here are some examples:
# %u - Username must match. Probably sufficient for most uses.
# %u%r - Username and remote IP address must match.
# %u%s - Username and service (ie. IMAP, POP3) must match.
#
# The service name can contain variables, for example %Ls expands to
# pop3 or imap.
#
# Some examples:
# args = session=yes %Ls
# args = cache_key=%u dovecot
#args = dovecot
#}
偶的例子：
passdb:
driver: passwd-file
args: username_format=%n /etc/dovecot/openwebmail/%d/passwd
LZ聰明人，應該知道怎麼做了吧？
《解決方案》
多謝樓上各位！
# vim dovecot.conf
在auth_mechanisms = plain 後面
添加：
username_format = %n
然後
# /etc/init.d/dovecot restart
Stopping Dovecot Imap:
Starting Dovecot Imap: Fatal: Error in configuration file /etc/dovecot.conf line 407: Unknown setting: username_format
我使用的是系統用戶，passwd file就是/etc/passwd了
# rpm -qa|grep dovecot
dovecot-0.99.11-8.EL4
是不是版本太低的問題？
[ 本帖最後由 arbor 於 2009-1-13 14:12 編輯 ]
《解決方案》
原帖由 arbor 於 2009-1-13 14:01 發表 http://bbs.chinaunix.net/images/common/back.gif
多謝樓上各位！
我使用的是系統用戶，passwd file就是/etc/passwd了
是不是版本太低的問題？
應該在pam後面的{}裡面加入args，具體的參數請參考DOC文檔，寫得很全
