CalMail SMTP server appears to be malfunctioning. As a result, one cannot send email via any email client or web browser. We will let you know when this issue is resolved.
UPDATE
[2013-05-14 16:19:37 | Ann DiFruscia]
SMTP server appears to be restored and working properly. I and others are able to send and receive email. There is no word as to what caused the malfunction.