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Lookups
1
Issue
4
IPv4 addresses
0
IPv6 addresses
The 'ptr' mechanism shouldn't be used because it's slow, resource intensive, and not very reliable.
v=spf1 ip4:91.137.135.201 ip4:91.137.135.202 ip4:91.137.200.250 a ptr ~all
Copied
Terms
ip4:
91.137.135.201 / 32
pass
if the sender's IP is between
91.137.135.201 and 91.137.135.201 (inclusive).
91.137.135.201 and 91.137.135.201 (inclusive).
OPC Networks Kft.
AS24822
or else
ip4:
91.137.135.202 / 32
pass
if the sender's IP is between
91.137.135.202 and 91.137.135.202 (inclusive).
91.137.135.202 and 91.137.135.202 (inclusive).
OPC Networks Kft.
AS24822
or else
ip4:
91.137.200.250 / 32
pass
if the sender's IP is between
91.137.200.250 and 91.137.200.250 (inclusive).
91.137.200.250 and 91.137.200.250 (inclusive).
OPC Networks Kft.
AS24822
or else
a
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
~all
soft fail
the email's SPF check.
Included records
v=spf1 ip4:91.137.135.201 ip4:91.137.135.202 ip4:91.137.200.250 a ptr ~all
The 'ptr' mechanism shouldn't be used because it's slow, resource intensive, and not very reliable