When reviewing the opt-out emails in Online Express Email Marketing, users see the Soft bounce reason of [Message Expired] [BAD DOMAIN FLUSH] [MX ERROR] Connection to MX server - 18.104.22.168 lost during <SMTP> <banner> transaction.
This has been resolved with a product release of Online Express.
Steps to Duplicate
1. Sign into The Raiser's Edge 2. Select Online Express 3. Select Email Marketing 4. Choose a recently sent email 5. Click on Opt-Outs 6. Look at the bounce messages and see the error