• Please be aware: Kaspersky Anti-Virus has been deprecated
    With the upgrade to Plesk Obsidian 18.0.64, "Kaspersky Anti-Virus for Servers" will be automatically removed from the servers it is installed on. We recommend that you migrate to Sophos Anti-Virus for Servers.
  • The Horde webmail has been deprecated. Its complete removal is scheduled for April 2025. For details and recommended actions, see the Feature and Deprecation Plan.
  • We’re working on enhancing the Monitoring feature in Plesk, and we could really use your expertise! If you’re open to sharing your experiences with server and website monitoring or providing feedback, we’d love to have a one-hour online meeting with you.

server denied authentification

  1. C

    Issue Webmail don't send email

    Hi, I've 4 server with plesk 18.0.31 #2 and from all server no client can send mail from webail and horde or roundcube. They have always the same error: "There was an error sending the message: Server denied authentication" From pc all work fine but with webmail is impossible to send email...
  2. N

    Horde : server denied authentification (SMTP)

    Hi, I've install postfix and dovecot, and if i try to reply or transfer mail from horde, i've this error : server denied authentification. This domain is on dedicated ip and have an ssl wildecard certificate. I've try to restart service and server : not change Can you help Me ?
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