We are unable to send replies to a variety of clients since we changed to Comcast. We are not heavy email users overall. We need our email to send reliably or there is no reason to continue with Comcast email services.
I have looked through the other support messages regarding this issue. I haven't seen anything that solves my issue.
Getting aborted emails for a few certain recipients.
This is the text from the "details.txt" part of the latest aborted email notification. Italics are my comments/changes.