Plesk email account via Outlook IMAP/POP3 returns the following after syncing: Message appears to be a Unicode message and your E-mail reader did not enable Unicode support.

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    Brian Essig

    [user@server ~]$ sudo plesk -v | grep 'Product version'
    Product version: Plesk Obsidian 18.0.29.2

     

    Still getting emails containing:

    Your IMAP server wants to alert you to the following: Your IMAP client does
    not appear to correctly implement Unicode messages, see
    https://tools.ietf.org/html/rfc6855.html

    Is there anyway to disable these messages from going out?

     

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    Yulia Plokhotnikova

    Hi @Brian Essig,

    It is supposed to be fixed in the version you are using, so something is missing here. We would like to look into this issue closely. Please submit a support request to Plesk directly or to a reseller, depending on where the license was purchased.

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    Brian Essig

    Yulia Plokhotnikova and anyone else who faces a similar issue, I had to restart the courier-impad services:

     

    service courier-imapd restart

    service courier-imaps restart

     

    My best guess is that the panel and associated rpm's updated on the server but thier running instance was never restarted so it was still technically running the old version as the running processes.  Once I did this my problems went away.

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    Franz Weiss

    Sorry Brian, this doesn´t work for me, but anyway, thank you for the tipp.

     

     

    @ Ekaterina Babenko: This error appears more and more on my customers OUTLOOK-Versions.

    To say as a "workaround" use Webmail or "another Client" is really ridiculous, as MS-Outlook is one of the most used E-Mail Clients in the world !

    And to switch the IMAP/POP3 server to Dovecot, just because of this "small" but extreme annoying BUG is NOT an acceptable solution !

    The thing is, that the Outlook-error-messages just started a few days ago, so how would you explain this to an end-customer, if NOTHING at customer-side changed ???

    Can you please check, WHEN Plesk will be able to supply an update which covers this Bug ?

    Thank you very much in advance !

    Sincerely

    Franz Weiss

    Plesk Obsidian
    Version 18.0.31 

    P.S. This doesn´t happen with Plesk Onyx Version 17.8.11 , so I would appreciate to solve this problem ASAP !!

     

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    Ivan Postnikov

    Hello Franz Weiss

    We've had a few customers contacted technical support. This issue is currently under investigation by RnD because the bug from this article was resolved earlier. The issue might be a new bug. 

    If there will be new confirmed bug, we'll prepare a new article. The info about resolved bugs for each Plesk update is available here.

     

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    Peter Debik

    Same issue here after an upgrade from Onyx to Obsidian through Plesk staff. System good elsewise, but reports coming in from Outlook users with the same issue as Brian Essig describes it. Very likely a new bug.

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    Tung Vu Nguyen

    I have same problem if I input UTF8 letter to sender description. Our current plesk version 18.0.31. I tried restarting IMAP server but the problem cannot be resolved. 

    service courier-imapd restart

    service courier-imaps restart

    Whether we can get your support directly for this problem. 

     

    Thanks

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