Adrian's Blog

Tag: outlook

  • Outlook Send/Receive error: 0x800CCC13 on Windows 10

    I got Send/Receive error: 0x800CCC13 on one IMAP mailbox when doing a Send & Receive on a fresh Windows 10 installation. The full error text is:
    Error message: ‘Robert – Sending’ reported error (0x800CCC13): ‘Cannot connect to the network. Verify your network connection or modem’
    Which is a little odd, when other IMAP mailboxes are working OK as part of the same Send & Receive.
    The solution is a system file scan & repair; from the command prompt run
    sfc /scannow
    Which just takes a few minutes to complete and resolves the problem.

  • Outlook Error 0x800CCC0E – Unable to connect to the server

    Error 0x800CCC0E on clients connecting to a Plesk VPS manifests itself with several descriptions:

    Task ‘Checking for new mail in subscribed folders on your_account.com.’ reported error (0x800CCC0E)
    Outlook is unable to download folder (null) from IMAP e-mail server for account your_account.com.
    Error: Unable to connect to the server. If you continue to receive this message, contact your server administrator or Internet service provider (ISP).

    Assuming that there isn’t a problem connecting to the server (in my case mail was being sent and received, but IMAP folders would not synchronise) then the problem lies with Plesk limiting the number of mail client connections from a single IP address – four by default. To raise this limit:

    Login to Plesk
    Under Server Management, Click “Tools & Settings”
    Under Mail, Click “Mail Server Settings”
    Change the “Maximum number of connections per IP address” to a larger value, e.g. 40.
    Click “OK”

  • Plesk SMTP authentication error

    After several hours banging my head against the wall over an Outlook error “0x800CCC80; None of the authentication methods supported by this client are supported by your server” I finally found the cause of the problem; I had installed the postfix mail server on the new Plesk VPS host rather than qmail.
    Postfix requires TLS encryption on port 587, qmail does not – and the Outlook default is “None”. Changing the encryption required in Outlook is disruptive – lots of clients – and also gives rise to a certificate warning, so I decided to take the cowards way out and replace postfix with qmail.
    More here.