[Typo3] mail not sent through install tool

[Eric Elder]

My typo3 installation was sending email's fine until I recently tried  
to install some extensions to test dmail (things like  
direct_mail_subscription, sr_email_subscribe, feuser_admin,  
sr_feuser_register).

My test didn't work out, so I uninstalled those extensions, but now I  
can't get any email to send through typo3...the test email in the  
install tool never gets sent, nor when checking the box to test "Test  
t3lib_htmlmail" also in the install tool.  My forms on my site no  
longer send emails, neither do my differentiated formmail forms.  It  
seems all emailing has stopped through typo3, but no errors appear,  
and the results pages display as it nothing is wrong.

Any place I should look to start tracking down a solution?

Thanks,
Eric