I am using Evolution 2.2.3 and FC4. When sending an email I frequently (but not always) get an error message pop-up with the following text: Error while performing operation. RCPT TO <xxxx@xxxxxxxx> failed: Requested action not taken: mailbox name not allowed. In all cases the email address that I am trying to send to is a valid email address. I then press "OK" to dismiss the above message. Pressing send/receive causes the message to cycle again. After the 3rd iteration, my email message is sent as if there is no problem. Has anyone else seen this error. Any ideas on how to correct it? Charlie