lts.rs is a domain controlled by two nameservers at isp.telekom.rs. They are on the same IP network. Incoming mail for lts.rs is handled by one mailserver at lts.rs themselves. gov.rs, mds.rs, rtv.rs, rzzo.rs, mondo.rs and at least 79 other hosts share nameservers with this domain. mail.lts.rs are subdomains to this hostname.