Dns

Description: Configure your DNS server to include SPF records for your domain. The only acceptable as a source of e-mail from your domain is your server. The SPF record should reflect this. Implementation: Add line to /etc/bind/db.d4.sysinst.ida.liu.se: @ IN TXT "v=spf1 mx -all" Restart service: service bind9 reload Verification: dig d4.sysinst.ida.liu.se TXT should return the above line Sending an email from server.d4.sysinst.ida.liu.se to e.g. a gmail should have a ‘Received-SPF: pass’ in the header....

Description: Need to install DNS on server with the following configuration: It must respond authoritatively to all non-recursive queries for names in the zones it is authoritative for. It must respond to all recursive queries from the hosts on its own network. It must not respond to any recursive queries from any outside host (i.e. host not on its own network). Apart from the queries in (1), it should not respond to any queries from any outside host....