• Our team is looking to connect with folks who use email services provided by Plesk, or a premium service. If you'd like to be part of the discovery process and share your experiences, we invite you to complete this short screening survey. If your responses match the persona we are looking for, you'll receive a link to schedule a call at your convenience. We look forward to hearing from you!
  • We are looking for U.S.-based freelancer or agency working with SEO or WordPress for a quick 30-min interviews to gather feedback on XOVI, a successful German SEO tool we’re looking to launch in the U.S.
    If you qualify and participate, you’ll receive a $30 Amazon gift card as a thank-you. Please apply here. Thanks for helping shape a better SEO product for agencies!
  • The BIND DNS server has already been deprecated and removed from Plesk for Windows.
    If a Plesk for Windows server is still using BIND, the upgrade to Plesk Obsidian 18.0.70 will be unavailable until the administrator switches the DNS server to Microsoft DNS. We strongly recommend transitioning to Microsoft DNS within the next 6 weeks, before the Plesk 18.0.70 release.
  • The Horde component is removed from Plesk Installer. We recommend switching to another webmail software supported in Plesk.

dns lookup failure

  1. F

    Resolved Error code: (26) DNS lookup failure, failed SPF check - spf.trusted-forwarder.org gone?

    Hi, I noted today, that I got SPF defered messages in my mail log due to "DNS lookup failed". Example: after very extensive troubleshooting and around my DNS configuration and the SPF records of the sender domains which all looked good and healthy, I started sniffing the DNS traffic and...
  2. P

    Resolved Error code: (26) DNS lookup failure, failed SPF check for some incoming mails

    Dear all, I'm running a new Linux server with Plesk installed. Here some data: Linux: Ubuntu 20.04.3 LTS Plesk: Plesk Obsidian Version 18.0.39 Extension: Plesk Email Security Postfix Note: I use a standard installation of Ubuntu and Plesk through the hoster. So I found the following log in my...
  3. Dewan D

    Resolved Error code: (26) DNS lookup failure

    Hi Guys. I have looked through the forums but the references I found sadly did not help. Recently I have moved to a VPS with Plesk. Everything seems to be setup fine, except some emails are not coming through when the SPF Filter runs. Looking through the mail.log I have a few examples, since...
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