I think this scenario isn't handled too well, and I'm afraid servers that have seen your previous server will refuse to talk with it, and continue spamming the

I think this scenario isn't handled too well, and I'm afraid servers that have seen your previous server will refuse to talk with it, and continue spamming the old address. Make sure to backup your server's private key so that you can properly leave rooms. It's usually better to leave all rooms prior to decommissioning a server, too, but I am not 100% sure it would prevent that issue.