txm-lb-smtp-taximail-com-703074123.ap-southeast-1.elb.amazonaws.com AXFR zone transfer

Not an apex domain The domain txm-lb-smtp-taximail-com-703074123.ap-southeast-1.elb.amazonaws.com is not the root of its zone.
Instead, try zone transfer on ap-southeast-1.elb.amazonaws.com .