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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-28 09:51:24 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-28 09:51:24 +0000 |
commit | f7548d6d28c313cf80e6f3ef89aed16a19815df1 (patch) | |
tree | a3f6f2a3f247293bee59ecd28e8cd8ceb6ca064a /doc/wiki/WhyDoesItNotWork.txt | |
parent | Initial commit. (diff) | |
download | dovecot-f7548d6d28c313cf80e6f3ef89aed16a19815df1.tar.xz dovecot-f7548d6d28c313cf80e6f3ef89aed16a19815df1.zip |
Adding upstream version 1:2.3.19.1+dfsg1.upstream/1%2.3.19.1+dfsg1upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'doc/wiki/WhyDoesItNotWork.txt')
-rw-r--r-- | doc/wiki/WhyDoesItNotWork.txt | 116 |
1 files changed, 116 insertions, 0 deletions
diff --git a/doc/wiki/WhyDoesItNotWork.txt b/doc/wiki/WhyDoesItNotWork.txt new file mode 100644 index 0000000..54dd8e1 --- /dev/null +++ b/doc/wiki/WhyDoesItNotWork.txt @@ -0,0 +1,116 @@ +Why is Dovecot not working for me? +================================== + + * *Dovecot always logs an error message* if anything goes wrong, so make sure + you're looking at the correct log files. Debug messages may be written to a + different log file than error messages. See <Logging.txt>. + * Are you upgrading? Make sure you read the <upgrading documents> + [Upgrading.txt]. + * Make sure you're modifying the correct config file! Ubuntu creates two of + them. Other distributions may also have older config files lying around. For + example add "garbage=blah" to the config file and verify that Dovecot now + fails to start up. + * Try logging in manually by sending IMAP commands. If you're trying with an + IMAP client you can't be sure if the problem is with the client's + configuration or Dovecot's configuration. Many IMAP clients handle all + errors simply by showing you the login password dialog, even if the problem + has nothing to do with authentication. See <TestInstallation.txt> (or + <TestPop3Installation.txt>). + * Are you using an old version? If you have a problem, see if NEWS + [http://dovecot.org/doc/NEWS] file mentions anything related to it. There + are also <binary packages> [PrebuiltBinaries.txt] available for newer + versions. + +If you have upgraded OpenVZ to LXC (ProxMox 4) and you are getting permisssion +issues +------------------------------------------------------------------------------------- + +This is due to ACL option being added to mount options. Simple fix is to run + +---%<------------------------------------------------------------------------- +setfacl -k /var/run/dovecot +setfacl -b /var/run/dovecot/* +---%<------------------------------------------------------------------------- + +and the issue should go away. For more information about this, see +https://forum.proxmox.com/threads/permission-error-w-sockets-inside-ct-since-migration-to-pve-4-1.25244/ + +It says "Authentication failed" +------------------------------- + +First of all enable 'auth_debug_passwords=yes' and see if the logs show what +the problem is. For non-PAM setups it should contain all the information needed +to solve the problem. If it's trying to use a wrong password scheme, you can +change that. See <Authentication.PasswordSchemes.txt>. + +'Aborted login (no auth attempts)' means that the client isn't even attempting +to log in. Most likely you have 'disable_plaintext_auth=yes' (default) and the +client isn't configured to use SSL/TLS (or you've also set 'ssl=no'). + +If you're using <PAM> [PasswordDatabase.PAM.txt]: + + * Make sure that Dovecot's auth process is running as root (assuming it's + using '/etc/shadow'). + * PAM errors aren't written to Dovecot's own logs. Usually they go to + '/var/log/auth.log' or something similar. + * Unfortunately PAM's error messages aren't always all that helpful in + figuring out what exactly the problem is. + * You could (temporarily) try to use <passdb shadow> + [PasswordDatabase.Shadow.txt] instead to see if it logs something more + understandable. + * Usually the problem is that you don't have a correctly named file in + '/etc/pam.d/'. See <PasswordDatabase.PAM.txt>. + +Authenticated SMTP is hanging when authenticating, when configured with dovecot +authenticator +--------------------------------------------------------------------------------------------- + +It is possible that you SMTP daemon is configured with the wrong socket. Please +note that '/run/dovecot/auth-client' and '/run/dovecot/auth-userdb' do respond +do different protocols. They are however very similar and it is possible that +the difference may not be reported as an error and the SMTP server is waiting +for a response that will never come. + +It's not finding my emails +-------------------------- + +'mail_debug=yes' makes Dovecot log where it's really looking for mails. Also +'auth_debug=yes' may be helpful in debugging. See <MailLocation.txt> for how to +configure where the mails are looked up from. + +Permission errors accessing the mail storage +-------------------------------------------- + +---%<------------------------------------------------------------------------- +lda(user1): Error: chdir(/home/user1/) failed: Permission denied +(euid=1025(user1) egid=1026(user1) stat() failed: No such file or directory, +euid is not dir owner) +---%<------------------------------------------------------------------------- + +Check out the access permissions of the mentioned directory, check: + + 1. Unix permissions with the command 'ls -aln /home/user1', see Unix + permissions + [https://en.wikipedia.org/wiki/File_system_permissions#Traditional_Unix_permissions], + as well as make sure the user has "x" permission for "'/'" and all + directories, just "'/home'" in this case, test with: "'su - user1 ls + -aln /home/user1'" + 2. security tools, like SELinux: run "'sestatus'" and "'grep -i AVC + /var/log/audit/audit.log'" to identify SELinux caused denials, + 3. what file system the storage is located on, for instance AFS implements + different access permissions or POSIX eXtended attributes may change the + traditional permissions. + +---%<------------------------------------------------------------------------- +Couldn't create mailbox list lock +/data/mail/domain.com/username/mailboxes.lock: +file_create_locked(/data/mail/domain.com/username/mailboxes.lock) failed: +link(/data/mail/domain.com/username/mailboxes.lock6628a230290f9029, +/data/mail/domain.com/username/mailboxes.lock) failed: Operation not permitted +---%<------------------------------------------------------------------------- + + 1. Your filesystem is not supported + 2. You have SELinux/AppArmor/RBAC or some other security framework that + prevents this + +(This file was created from the wiki on 2019-06-19 12:42) |