• 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!
  • 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.

Search results

  1. Dewan D

    Resolved Error code: (26) DNS lookup failure

    Hi. I am not entirely sure what fixed the problem, but I have removed the 10.255.255.1 ( which seems to have caused the 26 error ). I am not sure why the tempfail was cause for a hard fail, however right now all is workign correctly. Thanks for the help on this.
  2. Dewan D

    Resolved Error code: (26) DNS lookup failure

    Hi UFHH01 I put the above into the and I thought that had fixed the problem. However I checked the logs this morning and the problem is still there.
  3. Dewan D

    Resolved Error code: (26) DNS lookup failure

    Hi UFHH01 First time posting here as I am a first time plesk user ( moved from cpanel ). /etc/resolv.conf # Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8) # DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN nameserver 10.255.255.1 nameserver...
  4. Dewan D

    Resolved Error code: (26) DNS lookup failure

    Hi IgorG I have already read that article and the solution does not apply since my SPF local rules is empty.
  5. 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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