Roman McDougal
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Articles
Recent activity by Roman McDougal-
ImunifyAV interface not visible for cPanel end users.
Symptoms ImunifyAV is installed and working correctly in WHM, but the "ImunifyAV" interface is not present in users' cPanel interfaces. Description By default, the "ImunifyAV plugin" option isn't...
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Unable to delete addon domain: The domain userdata file appears to be missing
Symptoms When trying to delete an addon domain, the following error is presented: Error: The domain userdata file for the domain.tld appears to be missing. Description cPanel stores information ...
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Authoritative VS Non-Authoritative DNS Servers
Question What is the difference between Authoritative and Non-Authoritative DNS Servers? Answer To answer this question, we need to describe the following types of DNS services: Authorita...
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Why do I see the error "bad owner name (check-names)" when loading a DNS zone (BIND)?
Question Why do I see the error "bad owner name (check-names)" when loading a DNS zone (BIND)? general: error: /var/named/example.com.db:65: example_record.example.com: bad owner name (check-na...
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Can database replication be configured as a cPanel user?
Question Can database replication be configured as a cPanel user or WHM via PHPMyAdmin? Answer Replication requires extensive configurations, not only on the database side but on the routing side...
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High load averages and MySQL's query cache
Symptoms MySQL is heavily using CPU time, and load averages are increasing due to MySQL's usage. Description Please note, the query_cache option was deprecated in version 5.7 and removed in 8.0, ...
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How to increase or decrease swap
Question How can I increase or decrease the swap on my server? Answer The swap size can be changed without rebooting the server using the create-swap script. Turn off the swap space. swapoff -a ...
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403 errors when using specific web applications
Symptoms When accessing specific web applications, like WordPress plugins, and Apache's Evasive module (mod_evasive) is enabled, you receive a 403 error. An error similar to the following will logg...
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cPanel's SpamAssassin overview
Introduction Apache SpamAssassin examines incoming emails and tests for spam characteristics by evaluating specific parts of an email. Using Bayesian filtering techniques and network tests, it assi...
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Spam emails coming from the server, notice "Sender verify failed" messages in the queue
Symptoms Spam is coming from the server, and there are several transactions within the exim log file "/var/log/exim_mainlog" indicating the following error: H=host.example.com [x.x.x.x]:50803 I...