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If you need to strip query strings from a URL with mod_rewrite, you can use a rewrite syntax such as the following:

If you’re checking through your mail logs, or you catch a bounced e-mail with “554 relay access denied” in the bounce, the issue can be related to a few different things:

If you can’t see hidden files in proftpd (the files beginning with a dot, like .

To enable SSL/TLS support in proftpd, add the following to the proftpd.

If you can’t send mail via port 25 due to blocks imposed by your ISP, you can enable the submission port within Plesk pretty easily.

If you find that Horde (with Plesk) keeps refreshing when you attempt to log in, and there are no errors logged on the screen or in Apache’s logs, check the session.

When you need to find information about anything in Plesk, here’s some SQL statements that you can use:

To add a chrooted FTP user outside of Plesk properly, you need to:

To install PayFlowPro, you will need a few things:

If you find yourself in the situation where you need to bulk add SPF records to every domain in Plesk, you can use this huge one-liner:

If you get this error, you’ve most likely done a file-based MySQL backup restore, and the InnoDB files are hosed.

If Plesk throws an error that it can’t upgrade your license key because of languages, you need to remove the extra locales:

If you ever need to communicate with a POP3 server via telnet to test it, here’s some commands you can use:

If you have weird SSL errors and this one appears, you are trying to speak SSL to a daemon that doesn’t understand it:

To pretty much completely disable SSH timeouts, simply adjust the following directives in /etc/ssh/sshd_config:

Before you upgrade Plesk, it’s always a good idea to make a backup and also make your ip and shell maps:

As with most things, turning off SSLv2 in Lighttpd is much easier than in Apache.

WordPress uses .

I’ve heard a lot of people are interested in something like this, so I decided to create it.

It seems like lighttpd and Tomcat are at the forefront of what is ‘hot’ these days.

To disable reverse lookups in qmail with Plesk, simply add -Rt0 to the server_args line in /etc/xinetd.

This is one of Exim’s more cryptic errors:

If you need to change the hostname that Sendmail announces itself as, just add the following to sendmail.

If you have too many files to remove, try this trick:

If you’ve forgotten the root password for a MySQL server, but you know the system root, you can reset the MySQL root password pretty easily.

You may find that some sites do not work well if you omit a trailing slash on the URL.

Often times, the wonderful webmail application known as Horde will spin out of control and cause unnecessary resource usage and often cause defunct Apache processes to appear.

First, you have to get the certificate and key out of Windows in a pfx (PKCS #12) format.

If you can’t use PHP to force HTTPS, you can use mod_rewrite instead.

To force HTTPS with a PHP script, just put this snippet near the top:

The AWStats package in RHEL4/Centos4 and Plesk 8.

If you need Redhat DST change information, you can get it here.

I rarely try to toot my own horn, but I’ve created a pretty handy site.

If your server is sending out spam because of some bad scripts, hunt that stuff down:

To stop those evil double bounce e-mails in Plesk, just do:

If you need to change to a different primary IP in Plesk, here’s the easiest way:

To disable SSLv2 server-wide on a Plesk server, add this in your /etc/httpd/conf.

You can edit /etc/drweb/drweb_qmail.

If you want to hide the current version of Apache and your OS, just replace

As you may or may not know, there’s new Daylight Savings Time changes in 2007.

A really really strange issue randomly appears with ProFTPD and Plesk occasionally.

If you’ve ever worked on a linux system, chances are that you’ve used chmod many times.

LVM is handy when you want additional flexibility to grow or shrink your storage space safely without impacting filesystems negatively.

Okay, so we know it’s easy to measure web, ftp and mail traffic, right?

There’s lots of situations where you’d want to use a bulk IP change in Plesk:

Moving domains from client to client in Plesk is pretty quick from the command line.

If odd bounced e-mails are coming back to the server or the server is listed in a blacklist, some accounts may be compromised on the server.

You can delete them based on what they’re doing:

If you need to enable SSL in ProFTPD, try this out:

Need to redirect all users except for yourself to another site until yours is live?

Check for a SYN flood:

If you think an e-mail account has been hacked in Plesk, use this to hunt down which one it could be:

If you have a Cisco device logging to RHEL, here’s all that’s necessary:

Need a handy way to list all the email accounts and their passwords?

TCP: Treason uncloaked!

If Plesk ever appears to be out of sync with the configuration files, or if there’s a Plesk issue that’s occurring that makes no sense at all, just stand back and wave the Plesk magic wand:

To make Apache write logs similar to IIS, toss this into your Apache configuration:

If you’re migrating a domain, sometimes their mail will go to the old server for a while after you’ve changed the DNS.

Add this to the Apache configuration:

Need a username and password from the Plesk DB?

MySQL’s default configuration sets the maximum simultaneous connections to 100.

If you’re looking to get PCI/CISP compliance, or you just like better security, disable SSL version 2.

Okay, so you’ve verified that the correct admin password is being used, but you still can’t login?

First, check max_upload_size in php.

If you have a ton of files in a directory and you need to remove them, but rm says that the “argument list [is] too long”, just use find and xargs:

If you need to remove subdomains from the URL that users enter to visit your website, toss this into your VirtualHost directive:

If you’re not a fan of scientific notation, use this to calculate the apache bandwidth used from log files in MB:

There’s three main things to remember when it comes to the qmail queue:

If you work on enough servers, you discover that a lot of people put the security of their MySQL server on the back burner.

As most folks know, by default, MySQL limits the size of a MyISAM table at 4GB.

Sticky bits help you take file permissions to the next level.

If you find yourself in the sticky situation where kill -9 still won’t kill a sendmail process, check the process list.

In the event that a Fedora/RHEL/CentOS box won’t perform the init (which comes right after the initial kernel load), don’t fret - it can be fixed.

Add this to the virtual host configuration if PHPLive says it has no session.

Remember, if you raise MaxClients for an MPM in Apache, you must raise the ServerLimit directive, which is normally set to 256 on most servers.

If you think you have a rooted RHEL box, you’ll want to run the usual rkhunter, chkrootkit, and you will want to inspect for rogue processes.

So you have multiple users that need to read and write to certain files on the filesystem?

If your server is spewing an invalid HELO, you could be blacklisted pretty quickly.

Setting up Postfix to handle mail for a virtual domain and forward it to external mailboxes is pretty easy.