Zachary Karr
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Articles
Recent activity by Zachary Karr-
POP3 Quotas are not recalculated when messages are deleted
SymptomsEmail accounts that use POP3 to download and remove messages from the server, such as when the 'Leave messages on server' option is disabled, continue to show quota usage. This occurs even ...
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AutoSSL fails with PKCS#1 1.5 is disabled as it is known to be vulnerable to marvin attacks
Symptoms AutoSSL may fail to validate a domain to issue a new SSL certificate with the following error once the server is updated to cPanel version 132: Processing “cpuser”’s local DCV results … A...
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Transfer Tool does not migrate SSL Certificates from Plesk addon domains
SymptomsAdditional domains on Plesk accounts do not have SSL certificates or VirtutalHosts migrated to the cPanel server when using Transfer Tool. DescriptionPrimary domains have their SSLs copied ...
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WPToolkit Smart Updates fail with Jail Apache Virtual Hosts Enabled
SymptomsIf Jail Apache Virtual Hosts is enabled in WHM, the Smart Update or Clone feature of WPTK can fail with an error similar to the following:Unable to perform Smart Update on this website beca...
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Diagnosing 421 Errors (Apache SNI Proxy)
QuestionHow do I troubleshoot the website error code 421 in Apache 2.4.64? SymptomsWhen loading the website, the webpage loads a 421 error message. A proxy service like the following may be in use:...
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Ubuntu hash sum mismatch on package upgrade
SymptomsWhen updating packages on an Ubuntu server, you encounter an error similar to the following.Get:239 mirror://httpupdate.cpanel.net/ea4-u20-mirrorlist ./ ea-php83-pear 1.10.16-4+7.8.cpanel [...
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Rules are added to cpanel-dovecot-solr firewall chain each time service is restarted
SymptomsWhen the cpanel_dovecot_solr service is restarted, additional rules are added to the cpanel-dovecot-solr nftables firewall chain.# nft list chain inet filter cpanel-dovecot-solrtable inet f...
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mod_remoteip does not show client IP after 2025 June 4
SymptomsThe Apache domlogs do not show the remote client IP, and only the proxy IP, after the 2025 June 4 EasyApache update. DescriptionThe update ZC-12837: Create Cloudflare mod_remoteip configura...
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LiteSpeed 503 errors
Symptoms A site running on a LiteSpeed server gives a 503 error, and the LiteSpeed error log shows an error similar to the following. 2025-03-11 15:52:49.756443 [INFO] [24160] [T0] [127.0.0.1:58268...
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ELevate fails on UTF8 database table names
Symptoms If a database includes UTF8 names, the ELevate process will fail with an error similar to the following: * 2025-02-09 18:20:04 [WARN] *** Elevation Blocker detected: ***We have found the f...