Akismet Configuration

I already TOLD you. its the wp-spamfree plugin.

http://www.hybrid6.com/webgeek/plugins/wp-spamfree

Its in the code

function spamfree_denied_post_proxy($approved) {
	// REJECT PROXY COMMENTERS :: BEGIN

	// Update Count
	update_option( 'spamfree_count', get_option('spamfree_count') + 1 );
	// Akismet Accuracy Fix :: BEGIN
	$ak_count_pre	= get_option('ak_count_pre');
	$ak_count_post	= get_option('akismet_spam_count');
	if ($ak_count_post > $ak_count_pre) {
		update_option( 'akismet_spam_count', $ak_count_pre );
		}
	// Akismet Accuracy Fix :: END

	$spamfree_proxy_error_message_detailed = '<span style="font-size:12px;"><strong>Your comment has been blocked because the blog owner has set their spam filter to not allow comments from users behind proxies.</strong><br /><br />If you are a regular commenter or you feel that your comment should not have been blocked, please contact the blog owner and ask them to modify this setting.<br /><br /></span>'."\n";

Look at the last line. Thats right out of the wp-spmafree plugin.
Eventually you need to figure out to visit the settings page for that plugin and toggle OFF whatever setting is causing that.

WP-SpamFree — WordPress settings:
Allow users behind proxy servers to comment?
Most users should leave this unchecked. Many human spammers hide behind proxies.

WP-SpamFree — WordPress
http://alove4horses.com/wp-admin/options-general.php?page=wp-spamfree/wp-spamfree.php

So what are proxy servers? Guess I have one since I cannot leave a comment on my own blog.