* One is related to libspf2. If you do not use the `spf` lookup type or
the `spf` ACL condition, you are not affected.
* The last one is related to DNS lookups. If you use a trustworthy
resolver (which does validation of the data it receives), you're not
* One is related to libspf2. If you do not use the `spf` lookup type or
the `spf` ACL condition, you are not affected.
* The last one is related to DNS lookups. If you use a trustworthy
resolver (which does validation of the data it receives), you're not