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Lookups
1
Issue
18
IPv4 addresses
0
IPv6 addresses
The 'ptr' mechanism shouldn't be used because it's slow, resource intensive, and not very reliable.
v=spf1 mx a:correo.amc.com.ar ip4:190.122.192.0/28 ptr:blackberry.com -all
Copied
Terms
mx
pass
if the sender's IP address is in the A or AAAA record of this domain.
1 IPv4 address
or else
pass
if the sender's IP address is in the A or AAAA record of this domain.
1 IPv4 address
or else
ip4:
190.122.192.0 / 28
pass
if the sender's IP is between
190.122.192.0 and 190.122.192.15 (inclusive).
190.122.192.0 and 190.122.192.15 (inclusive).
COOP. MARIANO ACOSTA
AS28066
or else
ptr:
blackberry.com
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 mx a:correo.amc.com.ar ip4:190.122.192.0/28 ptr:blackberry.com -all
The 'ptr' mechanism shouldn't be used because it's slow, resource intensive, and not very reliable