What does 535 Incorrect Authentication Data mean? Çap et

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This error is commonly seen with mailbox file permissions in cPanel. Root access is required to correct this issue. If receiving this error and you are a Shared or Reseller customer, please contact us for further assistance.

VPS Customers

Users with root access can fix this problem in root WHM by doing to the following:

  1. In WHM, locate the Email section in the left-side panel.
  2. Select Repair Mailbox permissions.
  3. Click Proceed.

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