Easy to install. Tested on Joomla! 1.5.14 PHP 5.2.x & PHP 5.3.0; works perfect! Every user registration enabled Joomla! site must have this handy plugin.
Thanks...

I've had a lot of strange registrations lately, and with this plugin I've restricted these registration possibilities. Works like a charm!

Very easy to install and configure, Great work!

This type of functionality really should be stock for Joomla.

Any chance on us seeing this for JomSocial or CB?

What a life safer!! I was getting lost of "fake" registrations even with capatcha.

I have given this component an excellent rating because I set the parameters in seconds and tested the registration blocker which worked immediately with no fuss so anyone who should not be registering on your site will simply not know why they can't register and move on.

I have been receiving a lot of problems from .ru email registrations and have now blocked any email from .ru.

This appears to be perfect for blocking country specific emails before your site even starts to get spammed by these people, ip addresses can be blocked, usernames etc. Highly recommended and a plugin that you will probably forget about untill you need it to add another block.

Rated good only because the instructions are not accurate. I'm using Joomla 1.5.8 and need to be able to "whitelist" a significant number of domainnames qualifying for registration.

It took me hours to figure out the problem. Each name must indeed be on a new line, but each must be separated by a ";".
Note, there should be no ; after the last listed name.

I'm looking forward to getting my site operational and this plugin is just what I require.

IP blocking seems to work well (even with 1.5.8). You can set it to activate for just registrations - or for the whole site. You can use wildcards.

The username blocking is not working with 1.5.8 - I guess this will be fixed in time.

Its a Joomla plug-in - so you need to look in the Joomla Plugin Manager for the settings.

Options are awsome! I wish it could work with my 1.5.8 installation :(

Hello, this is an excellent plugin.

It is easy to install and configure but does not work with joomla 1.5.8.

I have limited hotmail mails and users can continue signing up.

Thank you for the work I hope that there is a solution soon.

1) Installed easy
2) Easy instructions for configuration
3) Does what it was designed to do

Great Job

... for this excellent plugin. Works well with Yoo login

The plugin is exactly what I need but it does not work under SEF (SefAdvance). As I debugged your script, it seems to be that the script finds the $task = 'register_save' but not the $option = 'com_user'.

Any ideas to fix the problem?

How about adding the ability to block registration unless the correct passphrase or code word is given on the registration page.

Kinda like the captcha only this allows the site to control who is able to sign up. The new user can still self register (without having to wait for the admin to create the account) as long as they input the correct code.

This plugin does exactly what it says it will. Installs quick, no hassle. I am running Joomla! version 1.5.6. Blocks those pesky fake .uk addresses that keep registering on my site :-)

When I found this plug in i was absolutely amazed. YES...YES this is something I was searching all the time. So what I did, yes, Installed on my test server. installation was as easy and straight as configuration. It does what is meant to be but my real disappointment is in the error message on the front end. for example if I don't want that hotmail addresses to be registered. It will stop all hotmail addresses and give a error message "SORRY WE DON'T ACCEPT HOTMAIL ADDRESS"(this is what i wrote at backend during configuration) but if someone write address which has already registered eg. me@mysite.com (not the hotmail one) the same error message will be appear, guess what! yes, "SORRY WE DON'T ACCEPT HOTMAIL ADDRESS" and this kinda funny which make user confuse at the front end. I believe if the author of this plugin can developed something useful like this plugin, he can also eradicate this small but important mistake which I am sure he is just mistakely overlooked.

This plugin has a good potential to be a "MUST HAVE PLUGIN" if the error messages can be set with condition.