Mail sync failed - Mail server denied authentication

conzelmannth · January 30, 2023, 9:04pm

Support intro

The mail app does not load the message body. All mails are listed in the inbox and other mail folders. The email-subject, sender, date received, etc. is fully displayed.
Instead of the message body (content) following error occurs: “Could not load message”
In approx. 1 out of 10 tries, the message is loaded completely.

I have the rainloop app running in nextcloud with the same mail account settings without issues.

The log in the admin section shows following error messages:

[mail] Fehler: OCA\Mail\Exception\ServiceException: Sync failed for 114:INBOX: Mail server denied authentication. at <>

[mail] Warnung: Horde_Imap_Client_Exception: Mail server denied authentication. at <>

Nextcloud version (eg, 20.0.5): 25.0.3
Mail (): 2.2.2
Operating system and version (eg, Ubuntu 20.04): Linux 4.4.180+ x86_64 on Synology DSM7
Apache or nginx version (eg, Apache 2.4.25): Apache 2.4.54
PHP version (eg, 7.4): 8.0

The issue you are facing:

Is this the first time you’ve seen this error? (Y/N):
Since 2 weeks it occurs.

Steps to replicate it:

open mail app
click on a mail in the inbox or any other folder of the mailbox

The output of your Nextcloud log in Admin > Logging:

[mail] Fehler: OCA\Mail\Exception\ServiceException: Sync failed for 114:INBOX: Mail server denied authentication. at <<closure>>

0. /volume1/web/nextcloud/apps/mail/lib/Service/Sync/SyncService.php line 126
   OCA\Mail\Service\Sync\ImapToDbSynchronizer->sync(OCA\Mail\Account {}, OCA\Mail\Db\Mailbox {id: 913}, OC\AppFramework\ScopedPsrLogger {}, 42, [1026,1027,1033, ... 8], false)
1. /volume1/web/nextcloud/apps/mail/lib/Controller/MailboxesController.php line 153
   OCA\Mail\Service\Sync\SyncService->syncMailbox(OCA\Mail\Account {}, OCA\Mail\Db\Mailbox {id: 913}, 42, [13695,13381,130 ... 5], true, null)
2. /volume1/web/nextcloud/lib/private/AppFramework/Http/Dispatcher.php line 225
   OCA\Mail\Controller\MailboxesController->sync(913, [13695,13381,130 ... 5], false, null)
3. /volume1/web/nextcloud/lib/private/AppFramework/Http/Dispatcher.php line 133
   OC\AppFramework\Http\Dispatcher->executeController(OCA\Mail\Control ... {}, "sync")
4. /volume1/web/nextcloud/lib/private/AppFramework/App.php line 172
   OC\AppFramework\Http\Dispatcher->dispatch(OCA\Mail\Control ... {}, "sync")
5. /volume1/web/nextcloud/lib/private/Route/Router.php line 298
   OC\AppFramework\App::main("OCA\\Mail\\Cont ... r", "sync", OC\AppFramework\ ... {}, ["913","mail.mailboxes.sync"])
6. /volume1/web/nextcloud/lib/base.php line 1047
   OC\Route\Router->match("/apps/mail/api/mailboxes/913/sync")
7. /volume1/web/nextcloud/index.php line 36
   OC::handleRequest()

POST /index.php/apps/mail/api/mailboxes/913/sync
from 192.168.*.** by xxx at 2023-01-30T19:45:27+00:00


[mail] Warnung: Horde_Imap_Client_Exception: Mail server denied authentication. at <<closure>>

 0. /volume1/web/nextcloud/apps/mail/vendor/bytestream/horde-imap-client/lib/Horde/Imap/Client/Base.php line 850
    Horde_Imap_Client_Socket->_login("*** sensitive parameters replaced ***")
 1. /volume1/web/nextcloud/apps/mail/vendor/bytestream/horde-imap-client/lib/Horde/Imap/Client/Base.php line 2507
    Horde_Imap_Client_Base->login("*** sensitive parameters replaced ***")
 2. /volume1/web/nextcloud/apps/mail/vendor/bytestream/horde-imap-client/lib/Horde/Imap/Client/Base.php line 2490
    Horde_Imap_Client_Base->_fetchWrapper("INBOX", Horde_Imap_Client_Fetch_Query {}, [Horde_Imap_Clie ... }])
 3. /volume1/web/nextcloud/apps/mail/lib/IMAP/MessageMapper.php line 674
    Horde_Imap_Client_Base->fetch("INBOX", Horde_Imap_Client_Fetch_Query {}, [Horde_Imap_Clie ... }])
 4. /volume1/web/nextcloud/apps/mail/lib/IMAP/PreviewEnhancer.php line 86
    OCA\Mail\IMAP\MessageMapper->getBodyStructureData(Horde_Imap_Clien ... e}, "INBOX", [6820,6818,6817,6816])
 5. /volume1/web/nextcloud/apps/mail/lib/Service/Search/MailSearch.php line 133
    OCA\Mail\IMAP\PreviewEnhancer->process(OCA\Mail\Account {}, OCA\Mail\Db\Mailbox {id: 859}, [OCA\Mail\Db\Mes ... }])
 6. /volume1/web/nextcloud/apps/mail/lib/Controller/MessagesController.php line 139
    OCA\Mail\Service\Search\MailSearch->findMessages(OCA\Mail\Account {}, OCA\Mail\Db\Mailbox {id: 859}, null, null, 20)
 7. /volume1/web/nextcloud/lib/private/AppFramework/Http/Dispatcher.php line 225
    OCA\Mail\Controller\MessagesController->index(859, null, null, 20)
 8. /volume1/web/nextcloud/lib/private/AppFramework/Http/Dispatcher.php line 133
    OC\AppFramework\Http\Dispatcher->executeController(OCA\Mail\Controller\MessagesController {}, "index")
 9. /volume1/web/nextcloud/lib/private/AppFramework/App.php line 172
    OC\AppFramework\Http\Dispatcher->dispatch(OCA\Mail\Controller\MessagesController {}, "index")
10. /volume1/web/nextcloud/lib/private/Route/Router.php line 298
    OC\AppFramework\App::main("OCA\\Mail\\Cont ... r", "index", OC\AppFramework\ ... {}, ["mail.messages.index"])
11. /volume1/web/nextcloud/lib/base.php line 1047
    OC\Route\Router->match("/apps/mail/api/messages")
12. /volume1/web/nextcloud/index.php line 36
    OC::handleRequest()

GET /index.php/apps/mail/api/messages?mailboxId=859&limit=20
from 192.168.*.* by xxx at 2023-01-30T19:45:27+00:00

The output of your config.php file in /path/to/nextcloud (make sure you remove any identifiable information!):

<?php
$CONFIG = array (
  'instanceid' => '**',
  'passwordsalt' => '***',
  'secret' => '***',
  'trusted_domains' =>
  array (
    0 => '192.168.*.*',
    1 => '*',
    2 => '*',
    3 => '*',
    4 => '*',
  ),
  'datadirectory' => '/volume1/nextcloud_data',
  'dbtype' => 'mysql',
  'version' => '25.0.3.2',
  'overwrite.cli.url' => 'http://192.168.*.*',
  'dbname' => 'conzel_nc',
  'dbhost' => '127.0.0.1:3307',
  'dbport' => '',
  'dbtableprefix' => 'oc_',
  'mysql.utf8mb4' => true,
  'dbuser' => '*',
  'dbpassword' => '*',
  'installed' => true,
  'ldapIgnoreNamingRules' => false,
  'ldapProviderFactory' => 'OCA\\User_LDAP\\LDAPProviderFactory',
  'log_type' => 'file',
  'logfile' => '/var/log/nextcloud.log',
  'loglevel' => 0,
  'log_rotate_size' => 104857600,
  'syslog_tag' => 'Nextcloud',
  'mail_smtpmode' => 'smtp',
  'mail_sendmailmode' => 'smtp',
  'mail_from_address' => '*',
  'mail_domain' => '*',
  'mail_smtphost' => '*',
  'mail_smtpport' => '465',
  'maintenance' => false,
  'has_rebuilt_cache' => true,
  'memcache.local' => '\\OC\\Memcache\\APCu',
  'memcache.locking' => '\\OC\\Memcache\\Redis',
  'redis' =>
  array (
    'host' => '127.0.0.1',
    'port' => 6379,
    'timeout' => 0,
    'password' => '',
    'dbindex' => 0,
  ),
  'theme' => '',
  'app_install_overwrite' =>
  array (
    0 => 'keeweb',
    1 => 'files_texteditor',
    2 => 'pdfdraw',
    3 => 'previewgenerator',
    4 => 'gpxmotion',
    5 => 'richdocuments',
    6 => 'integration_moodle',
    7 => 'openotp_sign',
    8 => 'files_markdown',
    9 => 'jsloader',
    10 => 'gpxedit',
    11 => 'extract',
  ),
  'mail_smtpsecure' => 'ssl',
  'default_phone_region' => 'DE',
  'mail_smtpauthtype' => 'LOGIN',
  'mail_smtpauth' => 1,
  'mail_smtpname' => '*',
  'mail_smtppassword' => '*',
  'allow_local_remote_servers' => true,
  'app.mail.verify-tls-peer' => false,
);

More logfiles on request.

Your help is highly appreciated. I tried many hours already. Removed the app and did new install, but no success yet.

Autchirion · February 22, 2023, 1:13pm

same issue here, did you solve it?

It’s somehow still working, but it’s filling up the log really bad

conzelmannth · February 22, 2023, 6:42pm

No. I have no idea what,s wrong. As I wrote in my initial post even a complete new install of the mail app in a propper mail enviroment did not solve the issue.
Also double checked the config according to this manual:

https://nextcloud-mail.readthedocs.io/en/latest/admin/

Currently I’m using rainloop. But the nextcloud integration is not as good with this app.

Autchirion · February 23, 2023, 11:26am

is the mailbox working or is it completely gone for you?
If it is generally working, activate debugging and check if there might be a timeout while checking the E-Mails! I just changed the timeout from 2 seconds to 20 seconds for imap to check if this is still happening.

conzelmannth · February 23, 2023, 8:50pm

The mailbox is generally working, but not usable.
I’ll check it again in debug-mode next week.

conzelmannth · April 1, 2023, 3:32pm

Since my last post in February the situation changed altough I didn’t change anything on the system. The error-message “Could not load the message” doesn’t appear anymore when opening a single mail. However it takes extemly long to oben the message-body. Sometimes more than 30 seconds, typically 20 seconds.
Two week ago I updated mail from 2.2.2 to 2.2.5 and Nextcloud to 25.0.5. This changed nothing on the behaviour.
No error occurs in the system-log. I didn’t activate the Debugmode yet as suggested by Autchirion in the previous post. Meanwhile I switched to Snappy mail, which runs normal. The message body opens within 4 seconds or less. This is an indication, that my mail-server is performing normally.

alexanderdd · December 19, 2023, 8:54pm

Is this related to the issue described here? Suspicious "Too many auth attempts" · Issue #9156 · nextcloud/mail · GitHub

Or is there another github issue that is relevant here?