[RSS Feed/News] Expected response code 250 but got code "503", with message "503 sender already given "

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XenForo

XenForo

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I haven't come across any source explaining this error. These are just ordinary notification emails. Does anyone have an idea?
  • Swift_TransportException: Email to [email protected] failed: Expected response code 250 but got code "503", with message "503 sender already given "
  • src/vendor/swiftmailer/swiftmailer/lib/classes/Swift/Transport/AbstractSmtpTransport.php:457

ادامه مطلب...
 
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