Use this free SPF app to generate the SPF records for your domains.
Technically every section is optional, if you're looking for a very simple, basic SPF record, then just keep clicking Next as the defaults will work for most simple mail server.
SPF generator generate an SPF record that advertises what sources are legitimately allowed to originate email for your domain names. It is useful for distancing yourself from forged email with your domain.
Quickly create SPF Records - Sender Policy Framework, to your DNS using our SPF Generator App.
Sender Policy Framework (SPF) is a method of fighting spam. As more time passes, this protocol will be used as one of the standard methods of fighting spam on the Internet. An SPF record is a TXT record that is part of a domain's DNS zone file. The TXT record specifies a list of authorized host names/IP addresses that mail can originate from for a given domain name. Once this entry is placed within the DNS zone, no further configuration is necessary to take advantage of servers that incorporate SPF checking into their anti-spam systems. This SPF record is added the same way as a regular A, MX, or CNAME record.