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1
Issue
453,915
IPv4 addresses
2.97 â‹… 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 include:mail.zendesk.com include:aws-spf.unblock-us.com ip4:208.75.123.0/24 ip4:107.170.147.168 include:amazonses.com include:spf.recurly.com include:_spf.google.com include:customeriomail.com ~all
Copied
Terms
mx
pass
if the sender's IP address is in the A or AAAA record of this domain.
7 IPv4 addresses
7 IPv6 addresses
or else
PTR checks should no longer be used. See
RFC 7208, section 5.5
.
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:
aws-spf.unblock-us.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
ip4:
208.75.123.0 / 24
pass
if the sender's IP is between
208.75.123.0 and 208.75.123.255 (inclusive).
208.75.123.0 and 208.75.123.255 (inclusive).
Constant Contact
AS40444
or else
ip4:
107.170.147.168 / 32
pass
if the sender's IP is between
107.170.147.168 and 107.170.147.168 (inclusive).
107.170.147.168 and 107.170.147.168 (inclusive).
DigitalOcean
AS14061
or else
include:
amazonses.com
Evaluate this SPF record and
pass
if it
passes.
This include does nothing if the included record returns fail, soft fail, or neutral.
Amazon SES
Email automation
or else
include:
spf.recurly.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.google.com
Evaluate this SPF record and
pass
if it
passes.
This include does nothing if the included record returns fail, soft fail, or neutral.
Gmail
Inbox software
or else
include:
customeriomail.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 mx ptr include:mail.zendesk.com include:aws-spf.unblock-us.com ip4:208.75.123.0/24 ip4:107.170.147.168 include:amazonses.com include:spf.recurly.com include:_spf.google.com include:customeriomail.com ~all
The 'ptr' mechanism shouldn't be used because it's slow, resource intensive, and not very reliable
5 x ip4 ~all
6 x ip4
12 x ip4 -all
12 x ip4 ~all
2 x ip4 6 x ip6 ~all
1 x ip4 include:sendgrid.net ~all
