7 / 10
Lookups
1
Issue
493,699
IPv4 addresses
2.19 ⋅ 10
24
IPv6 addresses
The 'ptr' mechanism shouldn't be used because it's slow, resource intensive, and not very reliable.
v=spf1 ptr include:ticket.spd.co.il include:spf.mandrillapp.com include:relay.mailchannels.net include:mail.zendesk.com include:spf.protection.outlook.com -all
Copied
Terms
ptr:
.
PTR checks should no longer be used. See
RFC 7208, section 5.5
.
or else
include:
ticket.spd.co.il
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.mandrillapp.com
Evaluate this SPF record and
pass
if it
passes.
This include does nothing if the included record returns fail, soft fail, or neutral.
Mandrill
Email automation
or else
include:
relay.mailchannels.net
Evaluate this SPF record and
pass
if it
passes.
This include does nothing if the included record returns fail, soft fail, or neutral.
MailChannels
Inbox software
or else
include:
mail.zendesk.com
Evaluate this SPF record and
pass
if it
passes.
This include does nothing if the included record returns fail, soft fail, or neutral.
Zendesk
Helpdesk
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
fail
the email's SPF check.
Included records
v=spf1 ptr include:ticket.spd.co.il include:spf.mandrillapp.com include:relay.mailchannels.net include:mail.zendesk.com include:spf.protection.outlook.com -all
The 'ptr' mechanism shouldn't be used because it's slow, resource intensive, and not very reliable
a 1 x ip4 ~all
12 x ip4 ~all
2 x ip4 ~all
5 x ip4 ~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