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Server says: 535 – Incorrect authentication data

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SMTP Error Code Server says: 535 – Incorrect authentication data Solution for Server says: 535 – Incorrect authentication data A “Server says: 535 – Incorrect authentication data” error is usually related to the SMTP User Authentication details you have configured … Read More

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How to Add or Modify SMTP User Authentication in GroupMail

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Most outgoing email servers require that you use SMTP User Authentication when configuring your email client. This information tells them that you are authorized to use their outgoing SMTP mail server to send email and that it is okay for … Read More

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