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Sysadmin Tips

JComments - can't disable CAPTCHA

Issue

Not possible to disable CAPTCHA for Public user group in Settings > Permissions > Public (JComments 3.0.0). After saving the changes "Enable CAPTCHA" check-box gets checked again.

Resolution

The issue is a bug confirmed by JComments developer "smart" here.

Read more: JComments - can't disable CAPTCHA

Incorrect MTU causes websites not to load at all or load incomplete

Issue

A small office reported an issue with their Internet connection - some websites wouldn't load at all, some load incompletely, and others work absolutely fine. The office had a SonicWALL NSA220 firewall connecting to the Internet via BT OpenReach VDLS modem (over PPPoE). Standard network / Internet connectivity tests didn't show any problems. 

Website not loading

Read more: Incorrect MTU causes websites not to load at all or load incomplete

Godaddy SMTP server randomly rejects emails

I have a few websites that run Joomla and send some notification emails via Godaddy SMTP server smtpout.europe.secureserver.net. Godaddy only allows 250 SMTP relays per day for free, but for this particular purpose this was more than enough.

One day I noticed that I was not receiving all notification emails I was supposed to receive. First of all all I logged on to Joomla's administration panel and tried to send some test emails using Joomla's built-in Mass Mail functionality. Results were interesting - most of the time emails would go through, but around 30% of the time sending would fail with error:

Message - The following from address failed

The following from address failed: This email address is being protected from spambots. You need JavaScript enabled to view it.

Read more: Godaddy SMTP server randomly rejects emails

Joomla! doesn't detect latest updates

Joomla! is up to date

Noticed that few of my Joomla websites were still on version 2.5.11 when the current version was 2.5.19. Joomla auto-update page was misleadingly saying that Joomla was up-to-date.

You already have the latest Joomla! version

Read more: Joomla! doesn't detect latest updates

  1. Force mp3, pdf and other files to download (Apache)
  2. Joomla native captcha (reCAPTCHA) not working
  3. SSH into DD-WRT router remotely
  4. Password protect Joomla administrator directory
  5. Check your Joomla site for vulnerabilities
  6. Replace directory using mod_rewrite redirect in .htaccess
  7. Add www to all URL's on Apach website (.htaccess mod_rewrite)
  8. HTML paragraph double spacing in Internet Explorer
  9. Google Maps API v3 - Polygons not appear in Internet Explorer
  10. Website goes dark on mouse click in IE

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