我在使用 dovecot 时遇到了一些问题，我已为 roundcube 筛选器添加了 dovecot_lda 支持。Roundcube 现在与筛选器完美配合。但如果我尝试通过 smtp（outlook|thunderbird）发送消息，邮件客户端总是要求通过，但无法发送电子邮件。
/var/log/exim/main.log:
2015-09-17 20:53:08 dovecot_plain authenticator failed for hostname.domain.com ([192.168.0.2]) [1.1.1.1]: 435 Unable to authenticate at present: authentication socket connection error
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[root@alfa ~]# cat /etc/dovecot/conf.d/10-master.conf
service imap-login {
inet_listener imap {
}
inet_listener imaps {
}
}
service pop3-login {
inet_listener pop3 {
}
inet_listener pop3s {
}
}
service imap {
}
service pop3 {
}
service auth {
unix_listener auth-userdb {
group = mail
mode = 0660
user = dovecot
}
user = dovecot
}
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[root@alfa ~]# cat /etc/exim/exim.conf
######################################################################
# #
# Exim configuration file for Vesta Control Panel #
# #
######################################################################
SPAMASSASSIN = yes
SPAM_SCORE = 50
CLAMD = yes
domainlist local_domains = dsearch;/etc/exim/domains/
domainlist relay_to_domains = dsearch;/etc/exim/domains/
hostlist relay_from_hosts = 127.0.0.1
hostlist whitelist = net-iplsearch;/etc/exim/white-blocks.conf
hostlist spammers = net-iplsearch;/etc/exim/spam-blocks.conf
no_local_from_check
untrusted_set_sender = *
acl_smtp_connect = acl_check_spammers
acl_smtp_mail = acl_check_mail
acl_smtp_rcpt = acl_check_rcpt
acl_smtp_data = acl_check_data
acl_smtp_mime = acl_check_mime
.ifdef SPAMASSASSIN
spamd_address = 127.0.0.1 783
.endif
.ifdef CLAMD
av_scanner = clamd: /var/run/clamav/clamd.sock
.endif
tls_advertise_hosts = *
tls_certificate = /usr/local/vesta/ssl/certificate.crt
tls_privatekey = /usr/local/vesta/ssl/certificate.key
daemon_smtp_ports = 25 : 465 : 587 : 2525
tls_on_connect_ports = 465
never_users = root
host_lookup = *
rfc1413_hosts = *
rfc1413_query_timeout = 5s
ignore_bounce_errors_after = 2d
timeout_frozen_after = 7d
DKIM_DOMAIN = ${lc:${domain:$h_from:}}
DKIM_FILE = /etc/exim/domains/${lc:${domain:$h_from:}}/dkim.pem
DKIM_PRIVATE_KEY = ${if exists{DKIM_FILE}{DKIM_FILE}{0}}
######################################################################
# ACL CONFIGURATION #
# Specifies access control lists for incoming SMTP mail #
######################################################################
begin acl
acl_check_spammers:
accept hosts = +whitelist
drop message = Your host in blacklist on this server.
log_message = Host in blacklist
hosts = +spammers
accept
acl_check_mail:
deny condition = ${if eq{$sender_helo_name}{}}
message = HELO required before MAIL
drop message = Helo name contains a ip address (HELO was $sender_helo_name) and not is valid
condition = ${if match{$sender_helo_name}{\N((\d{1,3}[.-]\d{1,3}[.-]\d{1,3}[.-]\d{1,3})|([0-9a-f]{8})|([0-9A-F]{8}))\N}{yes}{no}}
condition = ${if match {${lookup dnsdb{>: defer_never,ptr=$sender_host_address}}\}{$sender_helo_name}{no}{yes}}
delay = 45s
drop condition = ${if isip{$sender_helo_name}}
message = Access denied - Invalid HELO name (See RFC2821 4.1.3)
drop condition = ${if eq{[$interface_address]}{$sender_helo_name}}
message = $interface_address is _my_ address
accept
acl_check_rcpt:
accept hosts = :
deny message = Restricted characters in address
domains = +local_domains
local_parts = ^[.] : ^.*[@%!/|]
deny message = Restricted characters in address
domains = !+local_domains
local_parts = ^[./|] : ^.*[@%!] : ^.*/\\.\\./
require verify = sender
accept hosts = +relay_from_hosts
control = submission
accept authenticated = *
control = submission/domain=
deny message = Rejected because $sender_host_address is in a black list at $dnslist_domain\n$dnslist_text
hosts = !+whitelist
dnslists = ${readfile {/etc/exim/dnsbl.conf}{:}}
require message = relay not permitted
domains = +local_domains : +relay_to_domains
deny message = smtp auth requried
sender_domains = +local_domains
!authenticated = *
require verify = recipient
.ifdef CLAMD
warn set acl_m0 = no
warn condition = ${if exists {/etc/exim/domains/$domain/antivirus}{yes}{no}}
set acl_m0 = yes
.endif
.ifdef SPAMASSASSIN
warn set acl_m1 = no
warn condition = ${if exists {/etc/exim/domains/$domain/antispam}{yes}{no}}
set acl_m1 = yes
.endif
accept
acl_check_data:
.ifdef CLAMD
deny message = Message contains a virus ($malware_name) and has been rejected
malware = *
condition = ${if eq{$acl_m0}{yes}{yes}{no}}
.endif
.ifdef SPAMASSASSIN
warn !authenticated = *
hosts = !+relay_from_hosts
condition = ${if < {$message_size}{100K}}
condition = ${if eq{$acl_m1}{yes}{yes}{no}}
spam = nobody:true/defer_ok
add_header = X-Spam-Score: $spam_score_int
add_header = X-Spam-Bar: $spam_bar
add_header = X-Spam-Report: $spam_report
set acl_m2 = $spam_score_int
warn condition = ${if !eq{$acl_m2}{} {yes}{no}}
condition = ${if >{$acl_m2}{SPAM_SCORE} {yes}{no}}
add_header = X-Spam-Status: Yes
message = SpamAssassin detected spam (from $sender_address to $recipients).
.endif
accept
acl_check_mime:
deny message = Blacklisted file extension detected
condition = ${if match {${lc:$mime_filename}}{\N(\.ade|\.adp|\.bat|\.chm|\.cmd|\.com|\.cpl|\.exe|\.hta|\.ins|\.isp|\.jse|\.lib|\.lnk|\.mde|\.msc|\.msp|\.mst|\.pif|\.scr|\.sct|\.shb|\.sys|\.vb|\.vbe|\.vbs|\.vxd|\.wsc|\.wsf|\.wsh)$\N}{1}{0}}
accept
######################################################################
# AUTHENTICATION CONFIGURATION #
######################################################################
begin authenticators
dovecot_plain:
driver = dovecot
public_name = PLAIN
server_socket = /var/run/dovecot/auth-client
server_set_id = $auth1
dovecot_login:
driver = dovecot
public_name = LOGIN
server_socket = /var/run/dovecot/auth-client
server_set_id = $auth1
######################################################################
# ROUTERS CONFIGURATION #
# Specifies how addresses are handled #
######################################################################
begin routers
#smarthost:
# driver = manualroute
# domains = ! +local_domains
# transport = remote_smtp
# route_list = * smartrelay.vestacp.com
# no_more
# no_verify
dnslookup:
driver = dnslookup
domains = !+local_domains
transport = remote_smtp
no_more
userforward:
driver = redirect
check_local_user
file = $home/.forward
allow_filter
no_verify
no_expn
check_ancestor
file_transport = address_file
pipe_transport = address_pipe
reply_transport = address_reply
procmail:
driver = accept
check_local_user
require_files = ${local_part}:+${home}/.procmailrc:/usr/bin/procmail
transport = procmail
no_verify
autoreplay:
driver = accept
require_files = /etc/exim/domains/$domain/autoreply.${local_part}.msg
condition = ${if exists{/etc/exim/domains/$domain/autoreply.${local_part}.msg}}{yes}{no}}
retry_use_local_part
transport = userautoreply
unseen
aliases:
driver = redirect
headers_add = X-redirected: yes
data = ${extract{1}{:}{${lookup{$local_part@$domain}lsearch{/etc/exim/domains/$domain/aliases}}}}
require_files = /etc/exim/domains/$domain/aliases
redirect_router = dnslookup
pipe_transport = address_pipe
unseen
localuser_fwd_only:
driver = accept
transport = devnull
condition = ${if exists{/etc/exim/domains/$domain/fwd_only}{${lookup{$local_part}lsearch{/etc/exim/domains/$domain/fwd_only}{true}{false}}}}
localuser_spam:
driver = accept
transport = local_spam_delivery
condition = ${if eq {${if match{$h_X-Spam-Status:}{\N^Yes\N}{yes}{no}}} {${lookup{$local_part}lsearch{/etc/exim/domains/$domain/passwd}{yes}{no_such_user}}}}
localuser:
driver = accept
#transport = local_delivery
transport = dovecot
condition = ${lookup{$local_part}lsearch{/etc/exim/domains/$domain/passwd}{true}{false}}
catchall:
driver = redirect
headers_add = X-redirected: yes
require_files = /etc/exim/domains/$domain/aliases
data = ${extract{1}{:}{${lookup{*@$domain}lsearch{/etc/exim/domains/$domain/aliases}}}}
file_transport = local_delivery
redirect_router = dnslookup
terminate_alias:
driver = accept
transport = devnull
condition = ${lookup{$local_part@$domain}lsearch{/etc/exim/domains/$domain/aliases}{true}{false}}
######################################################################
# TRANSPORTS CONFIGURATION #
######################################################################
begin transports
dovecot:
driver = pipe
command = /usr/libexec/dovecot/dovecot-lda -e -d $local_part@$domain -f $sender_address -a $original_local_part@$original_domain
return_path_add
log_output = true
delivery_date_add
envelope_to_add
user = ${extract{2}{:}{${lookup{$local_part}lsearch{/etc/exim/domains/$domain/passwd}}}}
group = mail
return_output
remote_smtp:
driver = smtp
#helo_data = $sender_address_domain
dkim_domain = DKIM_DOMAIN
dkim_selector = mail
dkim_private_key = DKIM_PRIVATE_KEY
dkim_canon = relaxed
dkim_strict = 0
procmail:
driver = pipe
command = "/usr/bin/procmail -d $local_part"
return_path_add
delivery_date_add
envelope_to_add
user = $local_part
initgroups
return_output
local_delivery:
driver = appendfile
maildir_format
maildir_use_size_file
user = ${extract{2}{:}{${lookup{$local_part}lsearch{/etc/exim/domains/$domain/passwd}}}}
group = mail
create_directory
directory_mode = 770
mode = 660
use_lockfile = no
delivery_date_add
envelope_to_add
return_path_add
directory = "${extract{5}{:}{${lookup{$local_part}lsearch{/etc/exim/domains/$domain/passwd}}}}/mail/$domain/$local_part"
quota = ${extract{6}{:}{${lookup{$local_part}lsearch{/etc/exim/domains/$domain/passwd}}}}M
quota_warn_threshold = 75%
local_spam_delivery:
driver = appendfile
maildir_format
maildir_use_size_file
user = ${extract{2}{:}{${lookup{$local_part}lsearch{/etc/exim/domains/$domain/passwd}}}}
group = mail
create_directory
directory_mode = 770
mode = 660
use_lockfile = no
delivery_date_add
envelope_to_add
return_path_add
directory = "${extract{5}{:}{${lookup{$local_part}lsearch{/etc/exim/domains/$domain/passwd}}}}/mail/$domain/$local_part/.Spam"
quota = ${extract{6}{:}{${lookup{$local_part}lsearch{/etc/exim/domains/$domain/passwd}}}}M
quota_directory = "${extract{5}{:}{${lookup{$local_part}lsearch{/etc/exim/domains/$domain/passwd}}}}/mail/$domain/$local_part"
quota_warn_threshold = 75%
address_pipe:
driver = pipe
return_output
address_file:
driver = appendfile
delivery_date_add
envelope_to_add
return_path_add
address_reply:
driver = autoreply
userautoreply:
driver = autoreply
file = /etc/exim/domains/$domain/autoreply.${local_part}.msg
from = "${local_part}@${domain}"
subject = "${if def:h_Subject: {Autoreply: ${quote:${escape:$h_Subject:}}} {Autoreply Message}}"
to = "${sender_address}"
devnull:
driver = appendfile
file = /dev/null
######################################################################
# RETRY CONFIGURATION #
######################################################################
begin retry
# Address or Domain Error Retries
# ----------------- ----- -------
* * F,2h,15m; G,16h,1h,1.5; F,4d,6h
######################################################################
# REWRITE CONFIGURATION #
######################################################################
begin rewrite
######################################################################
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[root@alfa ~]# cat /etc/dovecot/conf.d/15-lda.conf
protocol lda {
mail_plugins = $mail_plugins sieve
postmaster_address = user@domain
log_path = /var/log/dovecot-lda.log
}
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[root@alfa ~]# cat /etc/dovecot/conf.d/90-sieve.conf
plugin {
sieve = /var/mail/virtual/%u/sieve/dovecot.sieve
sieve_global_path = /usr/local/etc/dovecot/sieve/default.sieve
sieve_dir = /var/mail/virtual/%u/sieve
sieve_global_dir = /usr/local/etc/dovecot/sieve/global/
}
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该如何解决这个问题？
答案1
发生这种情况的原因是，dovecot 默认不信任来自 127.0.0.1（localhost）以外的主机的纯文本身份验证。
您可以使用两种不同的解决方案来解决该问题：
- 将您的 Outlook 客户端切换为使用 SSL 协议 (IMAPS：端口 993 / SMTPS：端口 465 或 587)。这是最好的方法
login_trusted_networks使用指令为 Outlook 客户端网络启用简单身份验证