That would be the cause, Darren. The Reply-To field must have a valid email address, otherwise the email send will fail and cause this type of softbounce.
Hi Darren, Can you drill down into one of these soft bounce activities and let us know what the message is? It's difficult to determine the cause of something like this without details of the bounce activity.
That would be the cause, Darren. The Reply-To field must have a valid email address, otherwise the email send will fail and cause this type of softbounce.