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phpnginxdebianlocalhostroundcube

Roundcube Mailbox isn't a valid mbox file

When I login to my local Roundcube mail client from the web browser, it shows empty Inbox/Sent folders with an error message. I'm using php7.3, nginx, mysql as a local tech stack.

Server error: STATUS: Mailbox isn't a valid mbox file (0.000 + 0.000 secs).

PRETTY_NAME="Debian GNU/Linux 9 (stretch)"
NAME="Debian GNU/Linux"
VERSION_ID="9"
VERSION="9 (stretch)"

enter image description here

Solution

  • After a long investigation, I found the solution.

    I just removed the leading line break from the file

    /var/spool/mail/{YOUR_USERNAME}

    And it worked like a charm.