I migrated one domain (There is several domains) from old server to new one, let's say server5.com. I used VM documentation. I disabled this domain on old server. I changed DNS A records at hosting Now all ok, but if I send messages from other domain on old server, mail going to old server even if I already disabled it. Where I need to change configuration on old server to clear cache or DNS records or something else please. I really need help. I stucked with migrating.