The relay server has now effectively been moved from the United States (server NC020) to the United Kingdom (server NC023). The new relay server is processing email normally. The old relay server will continue processing email still in its queue until it is clear, and will then be disabled.
Please remember that the new relay server only accepts mail submitted on port 587, sometimes called the “submission port”. Attempts to submit outgoing email to the relay server on the default SMTP port (25) will be rejected. This is an anti-spam and anti-virus measure which will ensure that your network doesn’t inadvertently send spam or viruses through the relay server (thereby needlessly consuming your bandwidth), and will ensure that the IP address of the mail server doesn’t end up in blacklists, thereby delaying the delivery of legitimate email.
Configuration instructions for your email program are available at Configure your Email Account to Use the Relay Server. Please remember that these instructions only apply if you are already authorised to use the relay server. Otherwise normal email configuration instructions apply.