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

5 Website Performance Tools You Should Know About

Site speed impacts traffic, sales, and rankings. These 5 performance tools—from beginner-friendly to expert-level—help identify bottlenecks so you can optimize load times and keep visitors engaged.

Unable to Send Email? Check These 5 Things Right Now

Can't send email? Before calling support, check these five common culprits: bad passwords, network errors, ISP port blocks, SMTP authentication settings, and SSL connection issues. Simple fixes could save your workday.

1 Big Reason Yahoo! Defers Mail from cPanel

cPanel's default Exim configuration can retry failed emails nearly 150 times over 4 days. When Yahoo defers just one message, this triggers excessive delivery attempts that mimic spam behavior, landing your server on Yahoo's blacklist.

How To Check Red Hat Version Number

Quickly identify your Red Hat version by checking /etc/redhat-release. Learn the difference between versions, updates, and errata patches to keep your RHEL system secure and properly maintained.

The 8 Email Blacklists You Should Actually Care About

Most email blacklists don't matter. Focus on these 8 critical lists—Spamhaus, CBL, XBL, SpamCop, PSBL, Invaluement, Barracuda, and SenderScore—that actually impact delivery to Gmail, Yahoo, and major providers.

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