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1
Issue
511,203
IPv4 addresses
2.19 â‹… 10
24
IPv6 addresses
The 'ptr' mechanism shouldn't be used because it's slow, resource intensive, and not very reliable.
v=spf1 ptr ptr:datapipe.com include:spf_a.rackspace.com include:spf_b.rackspace.com include:spf.protection.outlook.com ~all
Copied
Terms
PTR checks should no longer be used. See
RFC 7208, section 5.5
.
or else
ptr:
datapipe.com
PTR checks should no longer be used. See
RFC 7208, section 5.5
.
or else
include:
spf_a.rackspace.com
Evaluate this SPF record and
pass
if it
passes.
This include does nothing if the included record returns fail, soft fail, or neutral.
or else
include:
spf_b.rackspace.com
Evaluate this SPF record and
pass
if it
passes.
This include does nothing if the included record returns fail, soft fail, or neutral.
or else
include:
spf.protection.outlook.com
Evaluate this SPF record and
pass
if it
passes.
This include does nothing if the included record returns fail, soft fail, or neutral.
Microsoft 365 / Outlook
Inbox software
or else
~all
soft fail
the email's SPF check.
Included records
v=spf1 ptr ptr:datapipe.com include:spf_a.rackspace.com include:spf_b.rackspace.com include:spf.protection.outlook.com ~all
The 'ptr' mechanism shouldn't be used because it's slow, resource intensive, and not very reliable
32 x ip4 -all
88 x ip4 -all
6 x ip4 5 x ip6 -all
IP ranges
120.136.34.40
/ 31
Rackspace IT Hosting AS IT Hosting Provider Hong Kong
AS45187
120.136.34.40 - 120.136.34.41
2 IP addresses
2a01:111:f403:8000::
/ 51
Microsoft
AS8075
2a01:111:f403:8000::
2a01:111:f403:9fff:ffff:ffff:ffff:ffff
2a01:111:f403:c000::
/ 51
Microsoft
AS8075
2a01:111:f403:c000::
2a01:111:f403:dfff:ffff:ffff:ffff:ffff
2a01:111:f403:f000::
/ 52
Microsoft
AS8075
2a01:111:f403:f000::
2a01:111:f403:ffff:ffff:ffff:ffff:ffff