Error on Zimbra website
I don't know if this is the correct place to mention this - but anyway, here are my two pennies.
Signing up for email alerts at http://www.zimbra.com/alerts/index.php does not work if you have a domain name under the top level ".name". The website rejects your subscription with the message "Email address is not valid."
Regarding the Zimbra server I just want to say: wow, what a really great stuff (well still some bugs here and there but hey, it's only beta)
Thanks for the report. We'll get the validation fixed.
If you find bugs please vote on them here: http://bugzilla.zimbra.com
If you don't see the bug please file it. That way we get get them fixed.