• 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.

secure email

  1. N

    Resolved server security

    Hello! Just one question about server security. Currently I have one small VPS (just for testing) Debian 10 + Plesk Obsidian 18.0.40 + Imunify360, but I want to setup something better like VDS with max. 10 hosted domains. VDS will be based on Debian 10 with Plesk and Imunify360 just like already...
  2. C

    Resolved Outlook is generating an Internet Security Warning when CA Root Certificate is issues by and to Ples

    I currently run a VPS, which hosts both my website and mailserver requirements; with my opted email client being Outlook. Recently, I had to rebuild my VPS. As such, I have had to re-create my Email Accounts. Prior to the rebuild, I exported all the emails in Outlook where I have now...
  3. learning_curve

    Resolved Roundcube Security Issue

    Via Plesk, we provide (and so have users that prefer to use) Roundcube Webmail. There's already a lot of very helpful Plesk pages, which we've used previoulsy, to make this even more secure than the default settings it is provided with. The quickest way to make all these modifications in our...
  4. mschenk

    Resolved one mailserver per IP on a dedicated server?

    Hi, I have 3 IP's on a dedicated server and over 100 domains. IP 1: Shared IP, which includes the server name server1.mydomain.com and which i use also as mailserver "server1.mydomain.com" in the MX Records of all domains, independent if this domains use IP1, IP2, or IP3. - I set an PRT record...
    • mschenk
    • Thread
    • antispam mail configuration mailserver mx-record port 465 port 993 ptr secure email servername ssl/tls
    • Replies: 2
    • Forum: Plesk Onyx for Linux
  5. F

    Question Secure Email Connections

    Hi, I have a VPS with Plesk Onyx and have been trying to secure my email server. I've followed all the instructions I can find and set up the server to use the Let's Encrypt certificate, but my Outlook client is still saying that the target principal name is incorrect even after I install the...
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