Assign Multiple IP Addresses on One Account

By default, cPanel supports the usage of one dedicated IP per account. However, you can get around this by editing just a few files on the server. Here are the steps: 1. Edit /var/cpanel/userdata/$user/$subdomain.$maindomain for each subdomain (for addon domains you’ll usually edit the file for the subdomain associated with the addondomain) and change the…

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How to Enable Passive FTP

Passive FTP is not enabled with pure-ftp by default. To enable this, edit /etc/pure-ftpd.conf and uncomment out this line: PassivePortRange 30000 50000 This means that FTP will answer passively on the range of ports between 30000 and 50000, so you may want to narrow the scope to something like 30000 to 35000. Once you do…

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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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