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1
Issue
458,810
IPv4 addresses
2.19 ⋅ 10
24
IPv6 addresses
One of the terms in the SPF record for spfcust.mediamid.com is invalid..
v=spf1 include:spf.protection.outlook.com include:spfmx.mediamid.com include:spfcust.mediamid.com ~all
Copied
Terms
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
include:
spfmx.mediamid.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:
spfcust.mediamid.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
~all
soft fail
the email's SPF check.
Included records
v=spf1 include:spf.protection.outlook.com include:spfmx.mediamid.com include:spfcust.mediamid.com ~all
6 x ip4 5 x ip6 -all
12 x ip4 ~all
Invalid SPF record
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