Mail Redirection Anomalies to Some ISPs

We are currently experiencing issues with the Mail Redirection service for some destination ISPs, notably Wanadoo/Orange and AOL.  Mails redirected to a destination at these ISPs are being refused by the ISP.  We are currently investigating the issue.

Update: 12:00 CET:  We have determined that following a configuration change at Orange/Wanadoo, our mail redirection servers have been blacklisted at that ISP.  We are currently attempting to work with Orange to resolve the situation.

Update: 30 Aug, 12:45 CET:  Orange/Wanadoo has removed the blacklist for our mail servers and the mail backlog caused by the block is starting to reduce.  We estimate the situation will return to normal within the next couple of hours.