_spf.mail.yahoo.com SPF record: costs 3 of your 10 DNS lookups

Evaluated from public DNS on 25 September 2026. Records change, so check it live before you rely on the number.

3 of 10 lookups

Adding include:_spf.mail.yahoo.com to an SPF record uses 3 of the ten DNS lookups a receiving server allows: one for the include itself, and 2 for what _spf.mail.yahoo.com's own record pulls in.

1 term in this record point at a name that does not resolve. ptr:yahoo.com. Whenever evaluation reaches one, it spends one of the two void lookups an SPF check is allowed, in every record that includes this one. That is a fault for _spf.mail.yahoo.com to fix, not you.

The record, expanded

_spf.mail.yahoo.com
v=spf1 ip4:34.2.64.0/19 ptr:yahoo.com ptr:yahoo.net ?all
- ip4:34.2.64.0/19
- ptr:yahoo.com 1 lookup
- ptr:yahoo.net 1 lookup
- ?all

Counts include everything nested beneath a branch, which is how the ten lookup limit is applied. To see what your own record costs with this include in it, check your domain.

See what the common email vendors cost, measured the same way.