I have a postfix mail server, 'server', all works fine the 'old' server that was formerly used has been 'decommissioned' and is on a NAT 192.x.x.x IP behind dynamic ADSL as a 'backup'
the old server still has it's old fullyQ tld.au hostname in it's config in the backup server I've entered: /etc/postfix/main.cf: transport_maps = static:smtp:server.tld.au:587 should I use IP:587 instead of hostname:587 ? what should I do on real server to make it accept all emails from this dynamic IP ? fwiw, dynamic IP has a backup.tld.au CNAME, can that be used? I suspect 'you are not in domain.tld' rejects from server might kick in? thanks
