7 / 10
Lookups
1
Issue
67,599
IPv4 addresses
0
IPv6 addresses
The 'ptr' mechanism shouldn't be used because it's slow, resource intensive, and not very reliable.
v=spf1 ip4:72.28.0.0/18 include:mail.zendesk.com include:spf.constantcontact.com include:spf.serverdata.net include:ptd.spf.syn-alias.com a mx ptr -all
Copied
Terms
ip4:
72.28.0.0 / 18
pass
if the sender's IP is between
72.28.0.0 and 72.28.63.255 (inclusive).
72.28.0.0 and 72.28.63.255 (inclusive).
PenTeleData
AS14928
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.constantcontact.com
Evaluate this SPF record and
pass
if it
passes.
This include does nothing if the included record returns fail, soft fail, or neutral.
Constant Contact
Email marketing
or else
include:
spf.serverdata.net
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:
ptd.spf.syn-alias.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
a
pass
if the sender's IP address is in the A or AAAA record of this domain.
1 IPv4 address
or else
mx
pass
if the sender's IP address is in the A or AAAA record of this domain.
1 IPv4 address
or else
PTR checks should no longer be used. See
RFC 7208, section 5.5
.
or else
-all
fail
the email's SPF check.
Included records
v=spf1 ip4:72.28.0.0/18 include:mail.zendesk.com include:spf.constantcontact.com include:spf.serverdata.net include:ptd.spf.syn-alias.com a mx ptr -all
The 'ptr' mechanism shouldn't be used because it's slow, resource intensive, and not very reliable
5 x ip4 ~all
2 x ip4 ~all
9 x ip4 ~all
11 x ip4 ~all
IP ranges
206.225.164.0
/ 22
Telax Hosted Call Centre
AS46994
206.225.164.0 - 206.225.167.255
1,024 IP addresses
185.64.212.0
/ 22
Intermedia Technologies Company
AS50152
185.64.212.0 - 185.64.215.255
1,024 IP addresses
103.211.140.0
/ 23
INTERMEDIA.NET AUSTRALIA PTY.
AS135160
103.211.140.0 - 103.211.141.255
512 IP addresses