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Lookups
1
Issue
3
IPv4 addresses
0
IPv6 addresses
The 'ptr' mechanism shouldn't be used because it's slow, resource intensive, and not very reliable.
v=spf1 ptr ip4:50.18.205.76 ip4:52.62.209.242 ip4:52.9.127.37 -all
Copied
Terms
PTR checks should no longer be used. See
RFC 7208, section 5.5
.
or else
ip4:
50.18.205.76 / 32
pass
if the sender's IP is between
50.18.205.76 and 50.18.205.76 (inclusive).
50.18.205.76 and 50.18.205.76 (inclusive).
Amazon.com
AS16509
or else
ip4:
52.62.209.242 / 32
pass
if the sender's IP is between
52.62.209.242 and 52.62.209.242 (inclusive).
52.62.209.242 and 52.62.209.242 (inclusive).
Amazon.com
AS16509
or else
ip4:
52.9.127.37 / 32
pass
if the sender's IP is between
52.9.127.37 and 52.9.127.37 (inclusive).
52.9.127.37 and 52.9.127.37 (inclusive).
Amazon.com
AS16509
or else
-all
fail
the email's SPF check.
Included records
v=spf1 ptr ip4:50.18.205.76 ip4:52.62.209.242 ip4:52.9.127.37 -all
The 'ptr' mechanism shouldn't be used because it's slow, resource intensive, and not very reliable