Horde login failed on the Plesk server: Could not open secure TLS connection to the IMAP server




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    Dan Wright

    I have implemented these changes and rebooted a couple times, but still the same exact error. I am using CentOS 7 and the latest Plesk and yum updates.


    # rpm -qa | grep gnutls


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    Dan Wright

    I need to add. I am not receiving this error upon login. I am able to log in and retrieve emails just fine. I see the error upon attempting to SEND emails in horde.

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    Alexandr Bashurov

    @Dan Wright

    Seems like this article is not applicable for the case, as IMAP connection works correctly.

    I can suggest checking /var/log/psa-horde/psa-horde.log, /var/log/maillog for any errors happening during the SMTP transaction and then searching our Knowledge Base for a fitting article.

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