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Webmail or mail client does not show emails when a Plesk mailbox is not empty

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Renan Genova Ferreira
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Plesk for Linux kb: technical ABT: Group A

Applicable to:

  • Plesk for Linux

Symptom

  • When logging in to webmail or a mail client, the email list does not show up. Instead, one of the following error messages appears:

    • in Horde:

      PLESK_ERROR: could not open mail inbox

    • in Roundcube:

      PLESK_ERROR: Server Error: STATUS: Internal error occurred.

  • One of the following error messages appears in /var/log/maillog:

    PLESK_INFO: dovecot: service=pop3, user=john_doe@example.com, ip=[]. Error: Index is read-only, can't write-lock /var/qmail/mailnames/example.com/john_doe/Maildir/dovecot.index.log

    PLESK_INFO: dovecot: service=lda, user=john_doe@example.com, ip=[]. Error: sieve: failed to open logfile (LOGGING TO STDERR): open(/var/qmail/mailnames/example.com/john_doe/.dovecot.sieve.log) failed: Permission denied (euid=30(popuser) egid=31(popuser) UNIX perms appear ok (ACL/MAC wrong?))

    PLESK_INFO: Error: open(/var/qmail/mailnames/example.com/john_doe/Maildir/dovecot-uidlist) failed: Permission denied Aug 4 16:47:26 cloud1 dovecot: service=lda, user=john_doe@example.com, ip=[]. msgid=<john_doe@www.example.com>: save failed to INBOX: Internal error occurred. Refer to server logfor more information.

  • If the mailbox is set up in new a mail client, POP3 authorization fails.

Cause

Incorrect ownership on Dovecot files: The owner/group should be popuser:popuser

Resolution

  1. Connect to the Plesk server via SSH.

  2. Change owner and group to popuser:popuser for all Dovecot files that have incorrect ownership:

    # find /var/qmail/mailnames/ -name dovecot* -exec chown popuser:popuser {} \;

  3. If this does not help, run:

    # chown popuser:popuser -R /var/qmail/mailnames/ 

Comments

2 comments

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  • Avatar
    Jan Bludau

    it not the solution in my case.

     

    i have over 700.000 Emails in my inbox, removed them to trash (many of them)

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  • Avatar
    Ivan Postnikov

    Hello Jan Bludau

    Thank you for the comment.

    Could you, please, clarify why wasn't it an option?

    Steps from resolution took too long?

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