The Email Delivery Guru

Over the past few days, multiple clients (and indeed, multiple ESPs) have seen delivery issues when sending to addresses at Fuse.net. Email attempts are bouncing with the error message, "553 5.1.8 Domain of sender address (bounce domain) does not exist." The error is not specific to any one bounce domain. And it has been seen by multiple email service providers, meaning that it is not specific to ExactTarget.

We contacted Fuse.net regarding this issue, and they have told us that as of yesterday, the issue is resolved. They've invited us to reach out to them if the issue recurs.

ET clients, don't hesitate to reach out to our deliverability services team if you have any questions.