We have certain domains we send email to, which in a few days we will get back as undeliverable because they timed out. We have tried directly typing in the address and also via Reply in an email they sent to us. This is all Ecomm communication that we're dealing with. It's vitally important for us because these are our customers and/or potential customers who are contacting us through these domains but we are unable to even reply back without getting bounced.
Does these events mean we may have been blacklisted by that domain? Specifically the three domains are aol.com, rr.com and cs.com
Now we do not send out ANY email's outside of normal Replies and Correspondence. We are totally WHITE hat people here (Sorry, you black hatters).
If we have been blacklisted, how can we find out and how do we get it changed?