4 / 10
Lookups
1
Issue
461,831
IPv4 addresses
7.92 ⋅ 10
28
IPv6 addresses
The 'ptr' mechanism shouldn't be used because it's slow, resource intensive, and not very reliable.
v=spf1 mx ptr ip4:185.132.64.212 ip4:185.48.254.18 include:_spf.planet-work.com include:spf.protection.outlook.com ~all
Copied
Terms
mx
pass
if the sender's IP address is in the A or AAAA record of this domain.
4 IPv4 addresses
4 IPv6 addresses
or else
PTR checks should no longer be used. See
RFC 7208, section 5.5
.
or else
ip4:
185.132.64.212 / 32
pass
if the sender's IP is between
185.132.64.212 and 185.132.64.212 (inclusive).
185.132.64.212 and 185.132.64.212 (inclusive).
ADISTA
AS16347
or else
ip4:
185.48.254.18 / 32
pass
if the sender's IP is between
185.48.254.18 and 185.48.254.18 (inclusive).
185.48.254.18 and 185.48.254.18 (inclusive).
ADISTA
AS16347
or else
include:
_spf.planet-work.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 mx ptr ip4:185.132.64.212 ip4:185.48.254.18 include:_spf.planet-work.com include:spf.protection.outlook.com ~all
The 'ptr' mechanism shouldn't be used because it's slow, resource intensive, and not very reliable
3 x ip4 2 x ip6 ~all
6 x ip4 5 x ip6 -all
IP ranges
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