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Lookups
1
Issue
66,817
IPv4 addresses
0
IPv6 addresses
The 'ptr' mechanism shouldn't be used because it's slow, resource intensive, and not very reliable.
v=spf1 a mx ptr ip4:216.38.214.0/24 ip4:216.58.170.0/24 ip4:216.148.96.0/24 ip4:216.148.97.0/24 ip4:74.63.175.0/24 ip4:159.182.0.0/16 ~all
Copied
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
PTR checks should no longer be used. See
RFC 7208, section 5.5
.
or else
ip4:
216.38.214.0 / 24
pass
if the sender's IP is between
216.38.214.0 and 216.38.214.255 (inclusive).
216.38.214.0 and 216.38.214.255 (inclusive).
Flexential Colorado
AS13649
or else
ip4:
216.58.170.0 / 24
pass
if the sender's IP is between
216.58.170.0 and 216.58.170.255 (inclusive).
216.58.170.0 and 216.58.170.255 (inclusive).
Flexential Colorado
AS13649
or else
ip4:
216.148.96.0 / 24
pass
if the sender's IP is between
216.148.96.0 and 216.148.96.255 (inclusive).
216.148.96.0 and 216.148.96.255 (inclusive).
AT&T Enterprises
AS7018
or else
ip4:
216.148.97.0 / 24
pass
if the sender's IP is between
216.148.97.0 and 216.148.97.255 (inclusive).
216.148.97.0 and 216.148.97.255 (inclusive).
AT&T Enterprises
AS7018
or else
ip4:
74.63.175.0 / 24
pass
if the sender's IP is between
74.63.175.0 and 74.63.175.255 (inclusive).
74.63.175.0 and 74.63.175.255 (inclusive).
Flexential Colorado
AS13649
or else
ip4:
159.182.0.0 / 16
pass
if the sender's IP is between
159.182.0.0 and 159.182.255.255 (inclusive).
159.182.0.0 and 159.182.255.255 (inclusive).
or else
~all
soft fail
the email's SPF check.
Included records
v=spf1 a mx ptr ip4:216.38.214.0/24 ip4:216.58.170.0/24 ip4:216.148.96.0/24 ip4:216.148.97.0/24 ip4:74.63.175.0/24 ip4:159.182.0.0/16 ~all
The 'ptr' mechanism shouldn't be used because it's slow, resource intensive, and not very reliable