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Lookups
1
Issue
21
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.
4 IPv4 addresses
or else
PTR checks should no longer be used. See
RFC 7208, section 5.5
.
or else
ip4:
62.164.169.32 / 28
pass
if the sender's IP is between
62.164.169.32 and 62.164.169.47 (inclusive).
62.164.169.32 and 62.164.169.47 (inclusive).
GCI Network Solutions
AS8851
or else
~all
soft fail
the email's SPF check.
Included records
v=spf1 a mx ptr ip4:62.164.169.32/28 ~all
The 'ptr' mechanism shouldn't be used because it's slow, resource intensive, and not very reliable