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Issue
1
IPv4 address
0
IPv6 addresses
The 'ptr' mechanism shouldn't be used because it's slow, resource intensive, and not very reliable.
v=spf1 mx ptr ip4:150.95.66.133 mx:win02-mailpro.zth.netdesignhost.com ~all
Copied
Terms
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:
150.95.66.133 / 32
pass
if the sender's IP is between
150.95.66.133 and 150.95.66.133 (inclusive).
150.95.66.133 and 150.95.66.133 (inclusive).
GMO-Z com NetDesign Holdings Co.
AS135161
or else
pass
if the sender's IP address is in the A or AAAA record of this domain.
or else
~all
soft fail
the email's SPF check.
Included records
v=spf1 mx ptr ip4:150.95.66.133 mx:win02-mailpro.zth.netdesignhost.com ~all
The 'ptr' mechanism shouldn't be used because it's slow, resource intensive, and not very reliable