Most domains send outbound mail through a relatively small number of servers. Domains should describe that set of servers in an SPF record in their DNS. Internet email receivers can then reject forged messages which don't come from an envelope sender domain's approved servers. This wizard helps domain owners identify all the servers which could be expected to send mail from their domain.

ems100rt.com's IP address is 62.75.216.174 (alster170.server4you.de). Does that server send mail from ems100rt.com?		yes no
This wizard found 2 names for the MX servers for ems100rt.com: alster170.server4you.de and mail. (A single machine may go by more than one hostname. All of them are shown.) MX servers receive mail for ems100rt.com. Do they also send mail from ems100rt.com?		yes no
Do you want to just approve any host whose name ends in ems100rt.com? (Expensive, unreliable and not recommended)		yes no
Do any other servers send mail from ems100rt.com? You can describe them by giving "arguments" to the a:, mx:, ip4:, and ptr: mechanisms. mx: takes domain names and approves all the MX servers of these domains. To keep the wizard short we left out ptr:, but it works analogously.		regular hostnames
		domain names
IP networks can be entered using CIDR notation, eg. 192.0.2.0/24		IP addresses
Could mail from ems100rt.com originate through servers belonging to some other domain? If you send mail through your ISP's servers, and the ISP has published an SPF record, name the ISP here.
Do the above lines describe all the hosts that send mail from ems100rt.com?		yes no
ems100rt.com. IN TXT "v=spf1"