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Lookups
1
Issue
9,217
IPv4 addresses
0
IPv6 addresses
The 'ptr' mechanism shouldn't be used because it's slow, resource intensive, and not very reliable.
v=spf1 mx ptr ip4:65.112.145.0/24 ip4:65.112.146.0/24 ip4:65.112.147.0/24 ip4:65.112.148.0/24 ip4:65.113.88.0/21 ip4:65.113.104.0/21 ip4:66.248.160.0/20 ~all
Copied
Terms
mx
pass
if the sender's IP address is in the A or AAAA record of this domain.
1 IPv4 address
or else
PTR checks should no longer be used. See
RFC 7208, section 5.5
.
or else
ip4:
65.112.145.0 / 24
pass
if the sender's IP is between
65.112.145.0 and 65.112.145.255 (inclusive).
65.112.145.0 and 65.112.145.255 (inclusive).
VI POWERNET
AS14434
or else
ip4:
65.112.146.0 / 24
pass
if the sender's IP is between
65.112.146.0 and 65.112.146.255 (inclusive).
65.112.146.0 and 65.112.146.255 (inclusive).
VI POWERNET
AS14434
or else
ip4:
65.112.147.0 / 24
pass
if the sender's IP is between
65.112.147.0 and 65.112.147.255 (inclusive).
65.112.147.0 and 65.112.147.255 (inclusive).
VI POWERNET
AS14434
or else
ip4:
65.112.148.0 / 24
pass
if the sender's IP is between
65.112.148.0 and 65.112.148.255 (inclusive).
65.112.148.0 and 65.112.148.255 (inclusive).
VI POWERNET
AS14434
or else
ip4:
65.113.88.0 / 21
pass
if the sender's IP is between
65.113.88.0 and 65.113.95.255 (inclusive).
65.113.88.0 and 65.113.95.255 (inclusive).
VI POWERNET
AS14434
or else
ip4:
65.113.104.0 / 21
pass
if the sender's IP is between
65.113.104.0 and 65.113.111.255 (inclusive).
65.113.104.0 and 65.113.111.255 (inclusive).
CenturyLink Communications
AS209
or else
ip4:
66.248.160.0 / 20
pass
if the sender's IP is between
66.248.160.0 and 66.248.175.255 (inclusive).
66.248.160.0 and 66.248.175.255 (inclusive).
VI POWERNET
AS14434
or else
~all
soft fail
the email's SPF check.
Included records
v=spf1 mx ptr ip4:65.112.145.0/24 ip4:65.112.146.0/24 ip4:65.112.147.0/24 ip4:65.112.148.0/24 ip4:65.113.88.0/21 ip4:65.113.104.0/21 ip4:66.248.160.0/20 ~all
The 'ptr' mechanism shouldn't be used because it's slow, resource intensive, and not very reliable