Overview The ‘451 Temporary Local Problem’ issue often occurs on sites attempting to send emails through the Microsoft Outlook mailer. It indicates that the SMTP server is experiencing a temporary problem that prevents it from processing your email request. Causes This error typically occurs when: The SMTP server is undergoing maintenance or experiencing technical difficulties […]
SMTP Error 421: Connection Timeout: Network issues
Overview The ‘421 Connection Timeout’ issue often occurs on sites attempting to send emails through an SMTP server. This indicates that the connection to the SMTP server has been timed out due to network issues. Causes This error typically occurs when: There are network connectivity problems between your server and the SMTP server The SMTP […]
Error 534-5.7.9: Application-specific password required
Overview The ‘Error 534-5.7.9 Application-specific password required’ issue often occurs on sites attempting to send emails with the Other SMTP mailer. It indicates that your account is missing the required application-specific password for authentication. Causes This error typically occurs when: Two-factor authentication (2FA) is enabled on your email account Your email provider requires app-specific passwords […]
Error 535: Authentication Failed: Incorrect Login Credentials
Overview The ‘Error 535’ issue often occurs on sites attempting to send emails through an SMTP server. It indicates the credentials you used to set up your SMTP plugin are invalid. Causes This error typically occurs when: The email account password has been changed recently The username (often the email address) is entered incorrectly The […]
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