I am relieved to know that today's email outage is over. However I have heard from customers that messages they sent to me during the outage were bounced with this error: "550 5.1.1 unknown or illegal alias"
I'm okay with the customers who contacted me. But I'm afraid of serious long-term repercussions from people who think that message means my email address is no good and who give up on contacting me.
If there were a way to find out who received such a message I would be able to repair the damage. Please advise.
