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Lookups
1
Issue
2,050
IPv4 addresses
0
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.
1 IPv4 address
or else
PTR checks should no longer be used. See
RFC 7208, section 5.5
.
or else
ip4:
86.111.240.0 / 21
pass
if the sender's IP is between
86.111.240.0 and 86.111.247.255 (inclusive).
86.111.240.0 and 86.111.247.255 (inclusive).
IQ PL Sp. z o.o.
AS47544
or else
-all
fail
the email's SPF check.
Included records
v=spf1 a mx ptr ip4:86.111.240.0/21 -all
The 'ptr' mechanism shouldn't be used because it's slow, resource intensive, and not very reliable