Please enter e-mail sources which are allowed to send e-mail on your domain's behalf.
To use your DNS zone as the domain name, just enter an '@' symbol.

Domain The domain to which this policy belongs.

You can give multiple values by separating them with a comma (,).
If the senders' IP address can be resolved by any of this domains' A records or the mail server is specified in an MX record,
please tick the 'any' checkbox for that record type.

Policy Item Value(s) Any Description
A records The IP addresses which are pointed to by this/these A record(s).
MX records The mail servers which are present in your domain's DNS zone
IPv4 Addresses Allow from these IPv4 addresses
IPv6 Addresses Allow from these IPv6 addresses
Other domains Specify domains which SPF records you would like to add
 
Other sources What to do when an e-mail from your domain comes from a different source.