2 / 10
Lookups
1
Issue
98
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/24 ip4:200.9.147.50 ip4:200.12.134.128/27 ip4:179.0.134.128/27 ip4:200.12.137.13/27 ptr -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
ip4:
200.9.147.50 / 32
pass
if the sender's IP is between
200.9.147.50 and 200.9.147.50 (inclusive).
200.9.147.50 and 200.9.147.50 (inclusive).
Universidad Nacional de Cuyo
AS27875
or else
ip4:
200.12.134.128 / 27
pass
if the sender's IP is between
200.12.134.128 and 200.12.134.159 (inclusive).
200.12.134.128 and 200.12.134.159 (inclusive).
Universidad Nacional de Cuyo
AS27875
or else
ip4:
179.0.134.128 / 27
pass
if the sender's IP is between
179.0.134.128 and 179.0.134.159 (inclusive).
179.0.134.128 and 179.0.134.159 (inclusive).
Universidad Nacional de Cuyo
AS27875
or else
ip4:
200.12.137.13 / 27
pass
if the sender's IP is between
200.12.137.0 and 200.12.137.31 (inclusive).
200.12.137.0 and 200.12.137.31 (inclusive).
Universidad Nacional de Cuyo
AS27875
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 mx/24 ip4:200.9.147.50 ip4:200.12.134.128/27 ip4:179.0.134.128/27 ip4:200.12.137.13/27 ptr -all
The 'ptr' mechanism shouldn't be used because it's slow, resource intensive, and not very reliable
IP ranges
200.12.134.128
/ 27
Universidad Nacional de Cuyo
AS27875
200.12.134.128 - 200.12.134.159
32 IP addresses
179.0.134.128
/ 27
Universidad Nacional de Cuyo
AS27875
179.0.134.128 - 179.0.134.159
32 IP addresses
200.12.137.13
/ 27
Universidad Nacional de Cuyo
AS27875
200.12.137.0 - 200.12.137.31
32 IP addresses