Can anyone help? Since Xtra changed over its email service to Yahoo! I have had problems. I have a server (outside of the Xtra network) that handles email for around 50 domains. Many of these are collection points that forward to client recipients with @xtra.co.nz addresses. Due to the large volume of email traffic sending to the xtra.co.nz domain, the Yahoo servers are now blocking/grey-listing my server. I have filled out the forms on the Yahoo website and have spoken to Xtra. However, I have had no response from Yahoo and Xtra doesn't seem to understand or appreciate the issue. Is anyone else in a similar situation? Had similar issues? Does anyone know a solution? The response from the Yahoo servers is '451 Message temporarily deferred' (meaning Yahoo first denies the initial attempt and waits for a re-try). However, none of the re-tries is accepted and the message eventually expires. Any suggestions would be appreciated. Cheers, Mike Densem mike(a)massive.co.nz