• 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.

starttls

  1. sergiomb

    Resolved change smtp default port to 587 in autodiscover.xml

    I want to advertise the submission port (SMTP with STARTTLS and authentication, port 587) instead of SMTP via SSL (port 465). Reason: port 587 is the standard, port 465 is not RFC compliant. in /usr/local/psa/admin/conf/panel.ini I put this [mail] clientConfig.incomingServer="mail.<domain>"...
  2. B

    Question How to diagnose Mail failure on StartTLS

    I had a domain tested for mail security and here it says that it failed. Where do i start to troubleshoot this? The mail server has letsencrypt SSL to 'secure the webmail' enabled. But i don't see where i can configure the STARTTLS in the Plesk GUI. Has anyone ever encountered this before?
  3. M

    Resolved Autodiscover mail function - SSL/STARTTLS

    Hello everyone! this is my first post, try my best to inform you about my problem.... I added a new domain for my client yesterday, added a Lets Encrypt wildcard certificate, everythin is ok. after adding new mail accounts i wanted to test autodiscover function with thunderbird (enabled...
  4. campsjos

    Resolved SSL certificates for mail server

    I configured my server to have "mail.serverhostname.tls" as secured mail server and works as expected. However, I have not succeeded configuring my domains to have "mail.mydomain.tls" also secured. The problem is that I need to migrate a lot of customer sites and domains from a non-plesk server...
  5. W

    Resolved SMTP Error 530 5.7.0 Must issue a STARTTLS command first

    Until recently I host my website on a shared hosting but because of the limitations that I encountered, I decided last December to switch to a VPS with Plesk onyx but I can not-send email to an external address. First I got a 250 SMTP error, then another and now I get the error message: SMTP...
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