SMTP and IMAP authentication error

SMTP and IMAP authentication error

Hello,

Since today I can neither send nor receive mails with an external e-mail client. Zoho mail in the browser works fine.
Here is a log of my e-mail client (Thunderbird):

  1. services.settings: Last_modified.json konnte nicht geladen werden: TypeError: NetworkError beim Versuch, die Ressource zu holen.
    Fehler: Serverfehler 503 Service nicht verfügbar
        fetchLatestChanges resource://services-settings/Utils.sys.mjs:390
    window.controllers/Controllers sollte nicht mehr verwendet werden. Verwenden Sie es nicht für die Browser-Erkennung.
    mailnews.smtp: Befehl fehlgeschlagen: 535 Authentifizierung fehlgeschlagen; currentAction=_actionAUTHComplete 
    mailnews.smtp: Authentifizierung fehlgeschlagen: Authentifizierung fehlgeschlagen 
    mailnews.smtp: Befehl fehlgeschlagen: 535 Authentifizierung fehlgeschlagen; currentAction=_actionAUTHComplete 
    mailnews.smtp: Authentifizierung fehlgeschlagen: Authentifizierung fehlgeschlagen

Apparently the password is not accepted.
I urgently need to send e-mails via SMTP using an external programme. Unfortunately, this is not possible directly via Zoho Mail.

Best regards, Thomas

    • Sticky Posts

    • Pocket from Mozilla is closing shop. Don’t lose your favorites . Move them to Zoho Mail Bookmarks now! 📥🔖

      The end of Pocket shouldn't mean the end of your important links and content. Easily import them into Zoho Mail's Bookmarks and continue right where you left off. You can bring over your entire Saves, Collections, and tags just the way they are. Bookmarks
    • Zoho Mail POP & IMAP Server Details

      Hello all! We have been receiving a number of requests regarding the errors while configuring or using Zoho Mail account in POP/ IMAP clients. The server details vary based on your account type and the Datacenter in which your account is setup. Ensure
    • Workplace - Zoholics Europe Customer Awards

      Dear Zoho Mail Community! 📣 We're excited to announce that at this year's Zoholics events across Europe, we're holding customer awards for the first time ever! Workplace - Zoholics Europe Customer Awards This is your chance to shout about the amazing
    • Important update on Group Management | Zoho Mail

      Dear Zoho Mail Community, This post is to inform you all of the following updates on the Group Management in Zoho Mail. Group Member Addition: If a group member is added to an organization group in a Zoho Application, the member will be automatically
    • Mastering email etiquette and best practices to follow in Zoho Mail

      Hello Zoho Mail Community, We’re thrilled to invite you all to our upcoming webinar: Mastering email etiquette and best practices to follow in Zoho Mail. Join our live webinar for expert etiquette tips to enhance your professionalism and elevate your