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Lookups
1
Issue
163,842
IPv4 addresses
7.92 ⋅ 10
28
IPv6 addresses
The 'ptr' mechanism shouldn't be used because it's slow, resource intensive, and not very reliable.
Terms
a
pass
if the sender's IP address is in the A or AAAA record of this domain.
1 IPv4 address
or else
mx
pass
if the sender's IP address is in the A or AAAA record of this domain.
or else
include:
rhostjh.com
Evaluate this SPF record and
pass
if it
passes.
This include does nothing if the included record returns fail, soft fail, or neutral.
or else
~all
soft fail
the email's SPF check.
Included records
v=spf1 a mx include:rhostjh.com ~all
9 x ip4 1 x ip6 a mx ptr ~all
The 'ptr' mechanism shouldn't be used because it's slow, resource intensive, and not very reliable