• 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.

smtp error (535): authentication failed

  1. H

    Question Plesk SMTP authentication Error through Python script

    I have one VPS with a Plesk server configuration. On the same VPS Plesk-Mail server is running. I am able to send mail through webmail. But whenever using a script and using the below values to send mail through SMTP, it gives an authentication error. How to solve this problem? Note: Same...
  2. W

    Resolved disable plaintext (PLAIN) authentication in imap/dovecot and smtp/postfix breaking webmail/roundcube

    Hi there, After following this article to disable plaintext authentication for my mail service (imap/dovecot and smtp/postfix) I ran into the following issues with Roundcude webmail service. https://support.plesk.com/hc/en-us/articles/213400829 Roundcude webmail is not working, showing me SMTP...
Back
Top