Authentication Failed: Incorrect authentication data

[UltraBlackLinux]

Hey there,
I just installed snappymail and I'm runing into some issues with authentication: Whenever I try to send an email I get an error saying "535 Incorrect Authentication Data". I did double check all my settings and also tried switching over to SSL, but to no avail. The "Test" button works completely fine and sais that everything is correct.

This is my current SMTP config:

Another issue I have is that compared to nextcloud mail, snappymail is really, and I mean really slow. For the mailbox and even individual mails to load it takes 15-30 seconds and up.
Edit: Slowness seems to have resolved itself, apparently something with my email provider.

Any ideas what's wrong?
Thanks!

[cm-schl]

Hi,

you should try to activate the logging and maybe also the additional option to temporary log passwords inside the log: https://github.com/the-djmaze/snappymail/wiki/FAQ#how-do-i-enable-logging . There were some very special problems with password encryption but without logs it is hard to say whats going on. If you're going to post your logs please remove your passwords or don't activate the additional setting to log them😉.

For the performance question maybe something here helps a bit: https://github.com/the-djmaze/snappymail/wiki/Improve-performance

[UltraBlackLinux]

The performance problem seems to have resolved itself. apparently something with my email provider.

I don't know why I would want to enable password logging only to remove the passwords from the log, but with log level warning I get this:

2.38.2/app/libraries/MailSo/Smtp/SmtpClient.php:598
Stack trace:
#0 /var/www/html/custom_apps/snappymail/app/snappymail/v/2.38.2/app/libraries/MailSo/Smtp/SmtpClient.php(506): MailSo\Smtp\SmtpClient->validateResponse(Array, '')
#1 /var/www/html/custom_apps/snappymail/app/snappymail/v/2.38.2/app/libraries/MailSo/Smtp/SmtpClient.php(229): MailSo\Smtp\SmtpClient->sendRequestWithCheck('AG1haWwAJEY3TUx...', 235)
#2 /var/www/html/custom_apps/snappymail/app/snappymail/v/2.38.2/app/libraries/RainLoop/Model/Account.php(276): MailSo\Smtp\SmtpClient->Login(Object(MailSo\Smtp\Settings))
#3 /var/www/html/custom_apps/snappymail/app/snappymail/v/2.38.2/app/libraries/RainLoop/Model/Account.php(242): RainLoop\Model\Account->netClientLogin(Object(MailSo\Smtp\SmtpClient), Object(RainLoop\Plugins\Manager))
#4 /var/www/html/custom_apps/snappymail/app/snappymail/v/2.38.2/app/libraries/RainLoop/Actions/Messages.php(797): RainLoop\Model\Account->SmtpConnectAndLogin(Object(RainLoop\Plugins\Manager), Object(MailSo\Smtp\SmtpClient))
#5 /var/www/html/custom_apps/snappymail/app/snappymail/v/2.38.2/app/libraries/RainLoop/Actions/Messages.php(192): RainLoop\Actions->smtpSendMessage(Object(RainLoop\Model\MainAccount), Object(MailSo\Mime\Message), Resource id #48, 797, true, false, false)
#6 /var/www/html/custom_apps/snappymail/app/snappymail/v/2.38.2/app/libraries/RainLoop/ServiceActions.php(143): RainLoop\Actions->DoSendMessage()
#7 /var/www/html/custom_apps/snappymail/app/snappymail/v/2.38.2/app/libraries/RainLoop/Service.php(132): RainLoop\ServiceActions->ServiceJson('')
#8 /var/www/html/custom_apps/snappymail/app/snappymail/v/2.38.2/app/libraries/RainLoop/Service.php(14): RainLoop\Service::RunResult()
#9 /var/www/html/custom_apps/snappymail/lib/Util/SnappyMailHelper.php(116): RainLoop\Service::Handle()
#10 /var/www/html/custom_apps/snappymail/lib/Controller/PageController.php(115): OCA\SnappyMail\Util\SnappyMailHelper::startApp(true)
#11 /var/www/html/lib/private/AppFramework/Http/Dispatcher.php(208): OCA\SnappyMail\Controller\PageController->indexPost()
#12 /var/www/html/lib/private/AppFramework/Http/Dispatcher.php(114): OC\AppFramework\Http\Dispatcher->executeController(Object(OCA\SnappyMail\Controller\PageController), 'indexPost')
#13 /var/www/html/lib/private/AppFramework/App.php(161): OC\AppFramework\Http\Dispatcher->dispatch(Object(OCA\SnappyMail\Controller\PageController), 'indexPost')
#14 /var/www/html/lib/private/Route/Router.php(302): OC\AppFramework\App::main('PageController', 'indexPost', Object(OC\AppFramework\DependencyInjection\DIContainer), Array)
#15 /var/www/html/lib/base.php(1003): OC\Route\Router->match('/apps/snappymai...')
#16 /var/www/html/index.php(24): OC::handleRequest()
#17 {main}
[2025-02-10 09:36:56.841][252e1ea9] SERVICE[WARNING]: AuthError[102] (535 Incorrect authentication data)
/var/www/html/custom_apps/snappymail/app/snappymail/v/2.38.2/app/libraries/RainLoop/Actions/Messages.php#871
#0 /var/www/html/custom_apps/snappymail/app/snappymail/v/2.38.2/app/libraries/RainLoop/Actions/Messages.php(192): RainLoop\Actions->smtpSendMessage(Object(RainLoop\Model\MainAccount), Object(MailSo\Mime\Message), Resource id #48, 797, true, false, false)
#1 /var/www/html/custom_apps/snappymail/app/snappymail/v/2.38.2/app/libraries/RainLoop/ServiceActions.php(143): RainLoop\Actions->DoSendMessage()
#2 /var/www/html/custom_apps/snappymail/app/snappymail/v/2.38.2/app/libraries/RainLoop/Service.php(132): RainLoop\ServiceActions->ServiceJson('')
#3 /var/www/html/custom_apps/snappymail/app/snappymail/v/2.38.2/app/libraries/RainLoop/Service.php(14): RainLoop\Service::RunResult()
#4 /var/www/html/custom_apps/snappymail/lib/Util/SnappyMailHelper.php(116): RainLoop\Service::Handle()
#5 /var/www/html/custom_apps/snappymail/lib/Controller/PageController.php(115): OCA\SnappyMail\Util\SnappyMailHelper::startApp(true)
#6 /var/www/html/lib/private/AppFramework/Http/Dispatcher.php(208): OCA\SnappyMail\Controller\PageController->indexPost()
#7 /var/www/html/lib/private/AppFramework/Http/Dispatcher.php(114): OC\AppFramework\Http\Dispatcher->executeController(Object(OCA\SnappyMail\Controller\PageController), 'indexPost')
#8 /var/www/html/lib/private/AppFramework/App.php(161): OC\AppFramework\Http\Dispatcher->dispatch(Object(OCA\SnappyMail\Controller\PageController), 'indexPost')
#9 /var/www/html/lib/private/Route/Router.php(302): OC\AppFramework\App::main('PageController', 'indexPost', Object(OC\AppFramework\DependencyInjection\DIContainer), Array)
#10 /var/www/html/lib/base.php(1003): OC\Route\Router->match('/apps/snappymai...')
#11 /var/www/html/index.php(24): OC::handleRequest()
#12 {main}
[2025-02-10 09:36:56.841][252e1ea9] SERVICE[WARNING]: - MailSo\Smtp\Exceptions\NegativeResponseException: 535 Incorrect authentication data in /var/www/html/custom_apps/snappymail/app/snappymail/v/2.38.2/app/libraries/MailSo/Smtp/SmtpClient.php:598
Stack trace:
#0 /var/www/html/custom_apps/snappymail/app/snappymail/v/2.38.2/app/libraries/MailSo/Smtp/SmtpClient.php(506): MailSo\Smtp\SmtpClient->validateResponse(Array, '')
#1 /var/www/html/custom_apps/snappymail/app/snappymail/v/2.38.2/app/libraries/MailSo/Smtp/SmtpClient.php(229): MailSo\Smtp\SmtpClient->sendRequestWithCheck('AG1haWwAJEY3TUx...', 235)
#2 /var/www/html/custom_apps/snappymail/app/snappymail/v/2.38.2/app/libraries/RainLoop/Model/Account.php(276): MailSo\Smtp\SmtpClient->Login(Object(MailSo\Smtp\Settings))
#3 /var/www/html/custom_apps/snappymail/app/snappymail/v/2.38.2/app/libraries/RainLoop/Model/Account.php(242): RainLoop\Model\Account->netClientLogin(Object(MailSo\Smtp\SmtpClient), Object(RainLoop\Plugins\Manager))
#4 /var/www/html/custom_apps/snappymail/app/snappymail/v/2.38.2/app/libraries/RainLoop/Actions/Messages.php(797): RainLoop\Model\Account->SmtpConnectAndLogin(Object(RainLoop\Plugins\Manager), Object(MailSo\Smtp\SmtpClient))
#5 /var/www/html/custom_apps/snappymail/app/snappymail/v/2.38.2/app/libraries/RainLoop/Actions/Messages.php(192): RainLoop\Actions->smtpSendMessage(Object(RainLoop\Model\MainAccount), Object(MailSo\Mime\Message), Resource id #48, 797, true, false, false)
#6 /var/www/html/custom_apps/snappymail/app/snappymail/v/2.38.2/app/libraries/RainLoop/ServiceActions.php(143): RainLoop\Actions->DoSendMessage()
#7 /var/www/html/custom_apps/snappymail/app/snappymail/v/2.38.2/app/libraries/RainLoop/Service.php(132): RainLoop\ServiceActions->ServiceJson('')
#8 /var/www/html/custom_apps/snappymail/app/snappymail/v/2.38.2/app/libraries/RainLoop/Service.php(14): RainLoop\Service::RunResult()
#9 /var/www/html/custom_apps/snappymail/lib/Util/SnappyMailHelper.php(116): RainLoop\Service::Handle()
#10 /var/www/html/custom_apps/snappymail/lib/Controller/PageController.php(115): OCA\SnappyMail\Util\SnappyMailHelper::startApp(true)
#11 /var/www/html/lib/private/AppFramework/Http/Dispatcher.php(208): OCA\SnappyMail\Controller\PageController->indexPost()
#12 /var/www/html/lib/private/AppFramework/Http/Dispatcher.php(114): OC\AppFramework\Http\Dispatcher->executeController(Object(OCA\SnappyMail\Controller\PageController), 'indexPost')
#13 /var/www/html/lib/private/AppFramework/App.php(161): OC\AppFramework\Http\Dispatcher->dispatch(Object(OCA\SnappyMail\Controller\PageController), 'indexPost')
#14 /var/www/html/lib/private/Route/Router.php(302): OC\AppFramework\App::main('PageController', 'indexPost', Object(OC\AppFramework\DependencyInjection\DIContainer), Array)
#15 /var/www/html/lib/base.php(1003): OC\Route\Router->match('/apps/snappymai...')
#16 /var/www/html/index.php(24): OC::handleRequest()
#17 {main}

Next MailSo\Smtp\Exceptions\LoginBadCredentialsException: 535 Incorrect authentication data in /var/www/html/custom_apps/snappymail/app/snappymail/v/2.38.2/app/libraries/MailSo/Smtp/SmtpClient.php:235
Stack trace:
#0 /var/www/html/custom_apps/snappymail/app/snappymail/v/2.38.2/app/libraries/RainLoop/Model/Account.php(276): MailSo\Smtp\SmtpClient->Login(Object(MailSo\Smtp\Settings))
#1 /var/www/html/custom_apps/snappymail/app/snappymail/v/2.38.2/app/libraries/RainLoop/Model/Account.php(242): RainLoop\Model\Account->netClientLogin(Object(MailSo\Smtp\SmtpClient), Object(RainLoop\Plugins\Manager))
#2 /var/www/html/custom_apps/snappymail/app/snappymail/v/2.38.2/app/libraries/RainLoop/Actions/Messages.php(797): RainLoop\Model\Account->SmtpConnectAndLogin(Object(RainLoop\Plugins\Manager), Object(MailSo\Smtp\SmtpClient))
#3 /var/www/html/custom_apps/snappymail/app/snappymail/v/2.38.2/app/libraries/RainLoop/Actions/Messages.php(192): RainLoop\Actions->smtpSendMessage(Object(RainLoop\Model\MainAccount), Object(MailSo\Mime\Message), Resource id #48, 797, true, false, false)
#4 /var/www/html/custom_apps/snappymail/app/snappymail/v/2.38.2/app/libraries/RainLoop/ServiceActions.php(143): RainLoop\Actions->DoSendMessage()
#5 /var/www/html/custom_apps/snappymail/app/snappymail/v/2.38.2/app/libraries/RainLoop/Service.php(132): RainLoop\ServiceActions->ServiceJson('')
#6 /var/www/html/custom_apps/snappymail/app/snappymail/v/2.38.2/app/libraries/RainLoop/Service.php(14): RainLoop\Service::RunResult()
#7 /var/www/html/custom_apps/snappymail/lib/Util/SnappyMailHelper.php(116): RainLoop\Service::Handle()
#8 /var/www/html/custom_apps/snappymail/lib/Controller/PageController.php(115): OCA\SnappyMail\Util\SnappyMailHelper::startApp(true)
#9 /var/www/html/lib/private/AppFramework/Http/Dispatcher.php(208): OCA\SnappyMail\Controller\PageController->indexPost()
#10 /var/www/html/lib/private/AppFramework/Http/Dispatcher.php(114): OC\AppFramework\Http\Dispatcher->executeController(Object(OCA\SnappyMail\Controller\PageController), 'indexPost')
#11 /var/www/html/lib/private/AppFramework/App.php(161): OC\AppFramework\Http\Dispatcher->dispatch(Object(OCA\SnappyMail\Controller\PageController), 'indexPost')
#12 /var/www/html/lib/private/Route/Router.php(302): OC\AppFramework\App::main('PageController', 'indexPost', Object(OC\AppFramework\DependencyInjection\DIContainer), Array)
#13 /var/www/html/lib/base.php(1003): OC\Route\Router->match('/apps/snappymai...')
#14 /var/www/html/index.php(24): OC::handleRequest()
#15 {main}
[2025-02-10 09:36:56.841][252e1ea9] [ERROR]: AuthError[102] (535 Incorrect authentication data)
/var/www/html/custom_apps/snappymail/app/snappymail/v/2.38.2/app/libraries/RainLoop/Actions/Messages.php#871
#0 /var/www/html/custom_apps/snappymail/app/snappymail/v/2.38.2/app/libraries/RainLoop/Actions/Messages.php(192): RainLoop\Actions->smtpSendMessage(Object(RainLoop\Model\MainAccount), Object(MailSo\Mime\Message), Resource id #48, 797, true, false, false)
#1 /var/www/html/custom_apps/snappymail/app/snappymail/v/2.38.2/app/libraries/RainLoop/ServiceActions.php(143): RainLoop\Actions->DoSendMessage()
#2 /var/www/html/custom_apps/snappymail/app/snappymail/v/2.38.2/app/libraries/RainLoop/Service.php(132): RainLoop\ServiceActions->ServiceJson('')
#3 /var/www/html/custom_apps/snappymail/app/snappymail/v/2.38.2/app/libraries/RainLoop/Service.php(14): RainLoop\Service::RunResult()
#4 /var/www/html/custom_apps/snappymail/lib/Util/SnappyMailHelper.php(116): RainLoop\Service::Handle()
#5 /var/www/html/custom_apps/snappymail/lib/Controller/PageController.php(115): OCA\SnappyMail\Util\SnappyMailHelper::startApp(true)
#6 /var/www/html/lib/private/AppFramework/Http/Dispatcher.php(208): OCA\SnappyMail\Controller\PageController->indexPost()
#7 /var/www/html/lib/private/AppFramework/Http/Dispatcher.php(114): OC\AppFramework\Http\Dispatcher->executeController(Object(OCA\SnappyMail\Controller\PageController), 'indexPost')
#8 /var/www/html/lib/private/AppFramework/App.php(161): OC\AppFramework\Http\Dispatcher->dispatch(Object(OCA\SnappyMail\Controller\PageController), 'indexPost')
#9 /var/www/html/lib/private/Route/Router.php(302): OC\AppFramework\App::main('PageController', 'indexPost', Object(OC\AppFramework\DependencyInjection\DIContainer), Array)
#10 /var/www/html/lib/base.php(1003): OC\Route\Router->match('/apps/snappymai...')
#11 /var/www/html/index.php(24): OC::handleRequest()
#12 {main}

The password I entered cannot be incorrect though because receiving mail works just fine, just sending it doesn't work

[cm-schl]

I don't know why I would want to enable password logging only to remove the passwords from the log

This was mend to let yourself check in your logs if the password is correctly passed to the server.

To have more details you should activate the debug info. Afterwards you should see something like described in #1517

[UltraBlackLinux]

[2025-02-10 15:36:39.213][df196620] SMTP[INFO]: Start connection to "ssl://***********"
[2025-02-10 15:36:39.300][df196620] SMTP[INFO]: Connect (success)
[2025-02-10 15:36:39.301][df196620] SMTP[DEBUG]: 0.087345838546753 (raw connection)
[2025-02-10 15:36:39.309][df196620] SMTP[INFO]: < 220 ************ Exim ESMTP Service ready\r\n
[2025-02-10 15:36:39.309][df196620] SMTP[INFO]: > EHLO ************\r\n
[2025-02-10 15:36:39.316][df196620] SMTP[INFO]: < **************** Hello *************** [***************]\r\n
[2025-02-10 15:36:39.317][df196620] SMTP[INFO]: < 250-SIZE 104857600\r\n
[2025-02-10 15:36:39.317][df196620] SMTP[INFO]: < 250-8BITMIME\r\n
[2025-02-10 15:36:39.317][df196620] SMTP[INFO]: < 250-ETRN\r\n
[2025-02-10 15:36:39.317][df196620] SMTP[INFO]: < 250-PIPELINING\r\n
[2025-02-10 15:36:39.317][df196620] SMTP[INFO]: < 250-PIPECONNECT\r\n
[2025-02-10 15:36:39.317][df196620] SMTP[INFO]: < 250-AUTH LOGIN PLAIN\r\n
[2025-02-10 15:36:39.317][df196620] SMTP[INFO]: < 250-CHUNKING\r\n
[2025-02-10 15:36:39.317][df196620] SMTP[INFO]: < 250 HELP\r\n
[2025-02-10 15:36:39.317][df196620] PLUGIN[INFO]: Hook: smtp.before-login
[2025-02-10 15:36:39.317][df196620] SMTP[INFO]: > AUTH PLAIN\r\n
[2025-02-10 15:36:39.326][df196620] SMTP[INFO]: < 334 \r\n
[2025-02-10 15:36:39.326][df196620] SMTP[INFO]: > ************\r\n
[2025-02-10 15:36:39.376][df196620] SMTP[INFO]: < 535 Incorrect authentication data\r\n

Yep did that. The base64 encoded password is correct as far as I can tell.

I'm confused because receiving mail works just fine, but sending doesn't.

[UltraBlackLinux]

I'm opening an issue on this...

Edit: maintainer just inactive apparently. this stays open then.

[UltraBlackLinux]

@the-djmaze curious ping since development here seems to have at least partially resumed

any idea what's going on here?