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XF 1.3 Zend_Mail_Protocol_Exception: Email to x failed: 4.7.8 Error: authentication failed

#1
So I have no idea where this issue came from, everything was working fine beforehand and then it randomly broke :/

Code:
Server Error Log
Error Info
Zend_Mail_Protocol_Exception: Email to FInast7709@fleckens.hu failed: 4.7.8 Error: authentication failed: UGFzc3dvcmQ6 - library/Zend/Mail/Protocol/Abstract.php:431
Generated By: Unknown Account, 3 minutes ago
Stack Trace
#0 /var/www/library/Zend/Mail/Protocol/Smtp/Auth/Login.php(95): Zend_Mail_Protocol_Abstract->_expect(235)
#1 /var/www/library/Zend/Mail/Protocol/Smtp.php(217): Zend_Mail_Protocol_Smtp_Auth_Login->auth()
#2 /var/www/library/Zend/Mail/Transport/Smtp.php(200): Zend_Mail_Protocol_Smtp->helo('localhost')
#3 /var/www/library/Zend/Mail/Transport/Abstract.php(348): Zend_Mail_Transport_Smtp->_sendMail()
#4 /var/www/library/Zend/Mail.php(1194): Zend_Mail_Transport_Abstract->send(Object(Zend_Mail))
#5 /var/www/library/XenForo/Mail.php(177): Zend_Mail->send()
#6 /var/www/library/XenForo/Mail.php(152): XenForo_Mail->sendMail(Object(Zend_Mail))
#7 /var/www/library/XenForo/Model/UserConfirmation.php(136): XenForo_Mail->send('FInast7709@flec...', 'lkjhg')
#8 /var/www/library/XenForo/ControllerPublic/Register.php(289): XenForo_Model_UserConfirmation->sendEmailConfirmation(Array)
#9 /var/www/library/XenForo/FrontController.php(347): XenForo_ControllerPublic_Register->actionRegister()
#10 /var/www/library/XenForo/FrontController.php(134): XenForo_FrontController->dispatch(Object(XenForo_RouteMatch))
#11 /var/www/index.php(13): XenForo_FrontController->run()
#12 {main}
Request State
array(3) {
  ["url"] => string(38) "http://www.deadx.net/register/register"
  ["_GET"] => array(0) {
  }
  ["_POST"] => array(16) {
    ["username"] => string(5) "lkjhg"
    ["email"] => string(22) "FInast7709@fleckens.hu"
    ["password"] => string(8) "********"
    ["password_confirm"] => string(8) "********"
    ["dob_month"] => string(1) "7"
    ["dob_day"] => string(2) "10"
    ["dob_year"] => string(4) "1957"
    ["gender"] => string(0) ""
    ["custom_fields"] => array(1) {
      ["minecraft"] => string(0) ""
    }
    ["custom_fields_shown"] => array(1) {
      [0] => string(9) "minecraft"
    }
    ["timezone"] => string(14) "America/Denver"
    ["captcha_question_answer"] => string(5) "DeadX"
    ["captcha_question_hash"] => string(40) "8dd844651276c888f90fe0631a6e0712c5e0752f"
    ["agree"] => string(1) "1"
    ["_xfToken"] => string(8) "********"
    ["reg_key"] => string(32) "b7aa65aa4dbc1c24982a4298556ee9aa"
  }
}
#XenforoNewb <- I am new to this software so don't be too harsh :)
 

Mike

XenForo developer
Staff member
#2
XF failed to send through the SMTP server you set it to use. Specifically, it seems to imply that your username/password were wrong. You should check those if it keeps happening.

In general, we would recommend sending mail through a local system rather than an external SMTP server, given an option.