我在 Fedora 25 上用 dovecot 设置了一个 postfix 邮件服务器。它通过 Squirrelmail 在 Web 浏览器上运行良好。但是，仍然无法通过 Outlook 和 Evolution 等邮件客户端程序进行连接。
在 Evolution 中，设置如下：
server type: IMAP+
server: mail.domain.com
port: 143
username: [email protected]
encryption method: No encryption
sending email server: smtp.domain.com
encryption method: No encryption
当然这里的服务器名称是假的。刷新客户端会弹出一个窗口，其中包含以下详细信息：
Mail authentication request
Please enter the password for mail account "[email protected]"
Add this password to your keyring (ticked)
输入密码并保存后，错误仍然出现。有什么建议可以解决这个问题吗？
后配置-n
alias_database = hash:/etc/aliases
alias_maps = hash:/etc/aliases
command_directory = /usr/sbin
compatibility_level = 2
daemon_directory = /usr/libexec/postfix
data_directory = /var/lib/postfix
debug_peer_level = 2
debugger_command = PATH=/bin:/usr/bin:/usr/local/bin:/usr/X11R6/bin ddd $daemon_directory/$process_name $process_id & sleep 5
home_mailbox = Maildir/
html_directory = no
inet_interfaces = all
inet_protocols = ipv4
mail_owner = postfix
mailq_path = /usr/bin/mailq.postfix
manpage_directory = /usr/share/man
meta_directory = /etc/postfix
mydestination = $myhostname, localhost.$mydomain, localhost, $mydomain
mydomain = domain.com
myhostname = mail.domain.com
mynetworks = 192.168.0.0/24, 127.0.0.0/8, [::1]/128
myorigin = $mydomain
newaliases_path = /usr/bin/newaliases.postfix
queue_directory = /var/spool/postfix
readme_directory = /usr/share/doc/postfix/README_FILES
sample_directory = /usr/share/doc/postfix/samples
sendmail_path = /usr/sbin/sendmail.postfix
setgid_group = postdrop
shlib_directory = /usr/lib64/postfix
unknown_local_recipient_reject_code = 550
后配置-M
smtp inet n - n - - smtpd
pickup unix n - n 60 1 pickup
cleanup unix n - n - 0 cleanup
qmgr unix n - n 300 1 qmgr
tlsmgr unix - - n 1000? 1 tlsmgr
rewrite unix - - n - - trivial-rewrite
bounce unix - - n - 0 bounce
defer unix - - n - 0 bounce
trace unix - - n - 0 bounce
verify unix - - n - 1 verify
flush unix n - n 1000? 0 flush
proxymap unix - - n - - proxymap
proxywrite unix - - n - 1 proxymap
smtp unix - - n - - smtp
relay unix - - n - - smtp
showq unix n - n - - showq
error unix - - n - - error
retry unix - - n - - error
discard unix - - n - - discard
local unix - n n - - local
virtual unix - n n - - virtual
lmtp unix - - n - - lmtp
anvil unix - - n - 1 anvil
scache unix - - n - 1 scache
以下是一些日志，可能会有用：
auth[3779]: pam_unix(dovecot:auth): check pass; user unknown
audit[3779]: USER_AUTH pid=3779 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:dovecot_auth_t:s0 msg='op=PAM:authentication grantors=? acct="?" exe="/usr/libexec/dovecot/auth" hostname=XXX.XXX.XXX.XXX addr=XXX.XXX.XXX.XXX terminal=dovecot res=failed'
auth[3779]: pam_unix(dovecot:auth): authentication failure; logname= uid=0 euid=0 tty=dovecot [email protected] rhost=XXX.XXX.XXX.XXX
dovecot[988]: pop3-login: Disconnected (auth failed, 1 attempts in 6 secs): user=<[email protected]>, method=PLAIN, rip=XXX.XXX.XXX.XXX, lip=XXX.XXX.XXX.XXX, secured, session=<x5+OzBheDLtZ+lTF>
dbus-daemon[1722]: [session uid=1000 pid=1722] Activating via systemd: service name='org.gnome.Terminal' unit='gnome-terminal-server.service' requested by ':1.114' (uid=1000 pid=3782 comm="gnome-terminal " label="unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023")
systemd[1699]: Starting GNOME Terminal Server...
dbus-daemon[1722]: [session uid=1000 pid=1722] Successfully activated service 'org.gnome.Terminal'
systemd[1699]: Started GNOME Terminal Server.
dbus-daemon[703]: [system] Activating via systemd: service name='net.reactivated.Fprint' unit='fprintd.service' requested by ':1.122' (uid=0 pid=3825 comm="su " label="unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023")
systemd[1]: Starting Fingerprint Authentication Daemon...
dbus-daemon[703]: [system] Successfully activated service 'net.reactivated.Fprint'
audit[1]: SERVICE_START pid=1 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:init_t:s0 msg='unit=fprintd comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success'
systemd[1]: Started Fingerprint Authentication Daemon.
audit[3825]: USER_AUTH pid=3825 uid=1000 auid=1000 ses=3 subj=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 msg='op=PAM:authentication grantors=pam_unix acct="root" exe="/usr/bin/su" hostname=mail.domain.com addr=? terminal=pts/0 res=success'
audit[3825]: USER_ACCT pid=3825 uid=1000 auid=1000 ses=3 subj=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 msg='op=PAM:accounting grantors=pam_unix,pam_localuser acct="root" exe="/usr/bin/su" hostname=mail.domain.com addr=? terminal=pts/0 res=success'
su[3825]: (to root) user on pts/0
audit[3825]: CRED_ACQ pid=3825 uid=1000 auid=1000 ses=3 subj=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 msg='op=PAM:setcred grantors=pam_unix acct="root" exe="/usr/bin/su" hostname=mail.domain.com addr=? terminal=pts/0 res=success'
su[3825]: pam_systemd(su:session): Cannot create session: Already occupied by a session
su[3825]: pam_unix(su:session): session opened for user root by (uid=1000)
audit[3825]: USER_START pid=3825 uid=1000 auid=1000 ses=3 subj=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 msg='op=PAM:session_open grantors=pam_keyinit,pam_limits,pam_systemd,pam_unix acct="root" exe="/usr/bin/su" hostname=mail.domain.com addr=? terminal=pts/0 res=success'
gnome-terminal-[3787]: Allocating size to GtkScrollbar 0x55cae1f9c380 without calling gtk_widget_get_preferred_width/height(). How does the code know the size to allocate?
gnome-terminal-[3787]: Allocating size to GtkScrollbar 0x55cae1f9c380 without calling gtk_widget_get_preferred_width/height(). How does the code know the size to allocate?
audit[1]: SERVICE_STOP pid=1 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:init_t:s0 msg='unit=fprintd comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success'
audit[3779]: USER_AUTH pid=3779 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:dovecot_auth_t:s0 msg='op=PAM:authentication grantors=pam_unix acct="user" exe="/usr/libexec/dovecot/auth" hostname=127.0.0.1 addr=127.0.0.1 terminal=dovecot res=success'
audit[3779]: USER_ACCT pid=3779 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:dovecot_auth_t:s0 msg='op=PAM:accounting grantors=pam_unix,pam_localuser acct="user" exe="/usr/libexec/dovecot/auth" hostname=127.0.0.1 addr=127.0.0.1 terminal=dovecot res=success'
dovecot[988]: imap-login: Login: user=<user>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, mpid=3870, secured, session=<6X5VzxheRMx/AAAB>
dovecot[988]: imap(user): Logged out in=79 out=767
dovecot[988]: imap-login: Disconnected (no auth attempts in 0 secs): user=<>, rip=127.0.0.1, lip=127.0.0.1, secured, session=<JTFN0BheRsx/AAAB>
dbus-daemon[703]: [system] Activating via systemd: service name='org.freedesktop.hostname1' unit='dbus-org.freedesktop.hostname1.service' requested by ':1.125' (uid=1000 pid=3900 comm="evolution " label="unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023")
systemd[1]: Starting Hostname Service...
dbus-daemon[703]: [system] Successfully activated service 'org.freedesktop.hostname1'
systemd[1]: Started Hostname Service.
audit[1]: SERVICE_START pid=1 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:init_t:s0 msg='unit=systemd-hostnamed comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success'
audit[1]: SERVICE_STOP pid=1 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:init_t:s0 msg='unit=systemd-hostnamed comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success'
kernel: nouveau 0000:05:00.0: imem: PRAMIN exhausted
kernel: nouveau 0000:05:00.0: imem: PRAMIN exhausted
kernel: nouveau 0000:05:00.0: imem: PRAMIN exhausted
kernel: nouveau 0000:05:00.0: imem: PRAMIN exhausted
kernel: nouveau 0000:05:00.0: imem: PRAMIN exhausted
kernel: nouveau 0000:05:00.0: imem: PRAMIN exhausted
kernel: nouveau 0000:05:00.0: imem: PRAMIN exhausted
kernel: nouveau 0000:05:00.0: imem: PRAMIN exhausted
auth[3972]: pam_unix(dovecot:auth): check pass; user unknown
audit[3972]: USER_AUTH pid=3972 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:dovecot_auth_t:s0 msg='op=PAM:authentication grantors=? acct="?" exe="/usr/libexec/dovecot/auth" hostname=127.0.0.1 addr=127.0.0.1 terminal=dovecot res=failed'
auth[3972]: pam_unix(dovecot:auth): authentication failure; logname= uid=0 euid=0 tty=dovecot [email protected] rhost=127.0.0.1
此处描述了该问题的历史。 临时身份验证失败 454 4.7.1 <email>: 中继访问被拒绝