Are you interested for monthly server support with Unlimited tickets, 24×7 monitoring, Security Audit and lot more ? please check our Monthly server support plans
535 incorrect authentication data error normally occurs due to wrong permissions.
For fixing mail box permissions from WHM,
1)> Log on to WHM as root. Then click on “Email” section.
2)> Choose “Repair Mailbox permissions”
3)> It will display the below message,
This function will inspect mailbox ownership and permissions and attempt to
fix any issues that may exist.
Click on “Proceed ”
This will fix permission issues in mail box
Need our help to fix the issue ? Submit Support Ticket NowView Server Administration Packages