> The volume of mail going out of my server was so low, I could read the outbound mail.log for myself, and routinely did. This was your actual problem. The lar

> The volume of mail going out of my server was so low, I could read the outbound mail.log for myself, and routinely did. This was your actual problem. The large providers (gmail, outlook, yahoo) and appliance vendors (ironport, etc.) are all now treating "unknown" senders as spammers. If you don't send a large enough volume of emails, you will never make it into their reputation tracking lists because "it's not worth it". End result, you are considered unknown and will be treated as a spammer forever. It is a huge organically grown cartel where the protocols work but you cannot enter a small player, no matter how well you behave. It is a shame, but there's nothing you can do about it :(