Executable not set-uid root

One of the servers here at work was giving a 500 Internal Server error whenever a PHP page was loaded. Among the various things that can cause this error when you’re running PHP in CGI mode (suPHP), this error showing up in the Apache log was most unusual. Turns out it’s due to the suphp…

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Exim ACL Ratelimit Database Not Available

In your Exim logs you may see errors like this: Warning: ACL “warn” statement skipped: condition test deferred: ratelimit database not available temporarily rejected connection in ?connect? ACL: ratelimit database not available This likely means the Exim cache databases are corrupted. You can clear them by running: rm -fv /var/spool/exim/db/* Then restart Exim. The files…

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Quota Errors in Exim’s Panic Log

In cPanel 11.25, you may be seeing errors like this in /var/log/exim_paniclog: 2010-04-15 12:33:27 failed to expand condition “${if exists {$home/etc/$domain/quota}{${if > {${lookup{$local_part}lsearch{$home/etc/$domain/quota}{$value}{0}}}{0}{${if eq {${if exists {$home/mail/$domain/$local_part/maildirsize}{1}{0}}}{0}{${if > {${run {/usr/local/cpanel/bin/eximwrap GETDISKUSED $local_part $domain}}}{${lookup{$local_part}lsearch{$home/etc/$domain/quota}{$value}{0}}}{true}{false}}}{${perl{checkuserquota}{$domain}{$local_part}{$message_size}{${lookup{$local_part}lsearch{$home/etc/$domain/quota}{$value}}}{$home/mail/$domain/$local_part/maildirsize}}}}}{false}}}{false}}” for virtual_user_maildir_overquota router: absolute value of integer “10485760000” is too large (overflow) To fix this, run : /scripts/reset_mail_quotas_to_sane_values –force –confirm –verbose…

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Changing a Site’s IP Address

There are three ways to change a site’s IP address on a cPanel server: Via WHM: Go to WHM > Change site’s IP Address , select the account, then select the IP Via Command Line: /usr/local/cpanel/bin/setsiteip -u $user $ip Manually: (This is also useful for changing the IP address of a single domain in an…

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Localdomains vs. Remotedomains

Have you ever dealt with a user that pointed their MX records to another server but email from their website or other users on the same server isn’t going there? This is because Exim on is configured to use files called localdomains and remotedomains, which tell Exim whether a domain’s email is hosted locally or…

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Installing and Configuring Dovecot

Enabling Dovecot You can convert a server from cppop or Courier IMAP to dovecot by running the following command: /scripts/setupmailserver dovecot   Configuring Dovecot Most relevant configurations can be made via WHM > Mailserver Configuration, but you can also change these via the config templates. You generally have to save the config via WHM at…

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