• 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.

Resolved Undelivered Mail Returned to Sender

Hello Forum, I resolved the issue but still some issues, I want to know where I should add the PTR record to solve this.
 

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What you added si a IP range/network mask. Why?
A PTR has to be set for IPv4 of server hostname.

I have no knowledge about your admin panel at your domain hoster. Please ask support of your domain hoster!
 
It won't take 3 days. That ought to be through within a few hours for most places. It can in some rare cases take up to 48 hours, but normally after a few hours most providers have already updated their routers.

Spamhaus: Your Plesk configuration for the HELO is correct. Just do not use the second option.
 
When I check with mail-tester I see these following errors and I have failed to understand the issue why SPAMHAUS continues to blacklist the domain
 
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The issue was resolved, and Spamhouse advised me to use my subdomain instead of a hostname in the SPF record.
 
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