Re: Send Password Reminder / Authentication Emails not arriving.
When you set the Sender Address option (see the docs, here), as Gary suggests, note that some hosts require that this be an actual, valid email account.
Also you should verify that your Tiki has access to the PHP @mail() function.
HTH,
-Rick
Now Available: TikiWiki for Dummies Smarties — A beginner's guide to using ))TikiWiki((.