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Thoughts on technology, business, and the gap between them.

MariaDB Upgrade Degrades Query Performance

A MariaDB upgrade from 10.2 to 10.4 caused a critical query to go from 8 seconds to over 30 minutes. The culprit wasn't data growth — it was a change in default optimizer switches. Here's how we diagnosed and fixed it

How to Build a List of Bad Bots Using GoAccess

Bad bots can often overload servers and cause issues with websites, leading to decreased performance and potential disruptions. While various bot lists are available online, it is important to note...

Block Bad Bots in cPanel using Apache

Bad bots? Recently, we’ve seen more and more traffic from bad bots. Depending on who you ask, as much as 50% of all internet traffic is caused by bots —...

Spamhaus Blacklist Removal Instructions

Did the Spamhaus Blacklist block your email? Learn how to check and remove your IP from the email blacklist with this easy 4 step process.

How Do I Remove My Server From the SpamCop Blacklist?

If your server's IP is on the SpamCop block list, your server is sending spam -- usually large amounts of spam.  False positive rates on SpamCop are low thanks to a reputation system they use to list IPs.  Generally, if your IP is on their list, you have a spam problem.

Spam Blacklist Removal Tips for Major ISPs

Here’s a round-up of our how-to series on removing your email server from spam blacklist. Please let me know what information you need, so I can continue to improve these...

Email Blacklist Monitoring Services Keep Email Flowing

To keep your email flowing, use a email blacklist monitoring service. These service will help you avoid costly email issues by providing quick notification should your IP land on an email blacklist.