hi guys. this may have been answered before but im not sure how it would have been worded. I have a centos 6.9 server running ispconfig3.0 but it is hosted with a company that i have had no end in issues with. so i have created a new hosting on a centos7.4 server running ispconfig 3.1 i have move 3 of my domains from the old hosting to the new hosting and they are working fine. in and out. however when i send a email from an account on the old server (different domain obviously) the email doesnt go to the new hosting, it goes to the old mailbox on the same hosting. i have since changed the domain name from "domain" to "domain1" on all of the moved domains so as to retain the emails for a short time before removing the domain entirely. and now the emails arrive anywhere. i have updated the old dns records for the moved domains to match what they are on the new hosting i have run the resync option. EDIT: i now get the error - "Helo command rejected: Host not found (in reply to RCPT TO command)"