spf_ipv4s: SPF field extraction functions
Description
Various helper functions to extract SPF record components.
Usage
spf_ipv4s(spf_rec)spf_ipv6s(spf_rec)
spf_includes(spf_rec)
spf_ptrs(spf_rec)
spf_exists(spf_rec)
Arguments
spf_rec
a character vector of DNS TXT records
Value
list; each element is a character vector of the specified component
spf_ipv4s("v=spf1 +mx ip4:214.3.140.16/32 ip4:214.3.140.255/32 ip4:214.3.115.12/32")