3 / 10
Lookups
1
Issue
5
IPv4 addresses
0
IPv6 addresses
The 'ptr' mechanism shouldn't be used because it's slow, resource intensive, and not very reliable.
v=spf1 a mx ptr ip4:193.243.158.20 ip4:193.243.158.1 ip4:193.243.158.17 ~all
Copied
Terms
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
ip4:
193.243.158.20 / 32
pass
if the sender's IP is between
193.243.158.20 and 193.243.158.20 (inclusive).
193.243.158.20 and 193.243.158.20 (inclusive).
VinNest ISP Autonomous System
AS28750
or else
ip4:
193.243.158.1 / 32
pass
if the sender's IP is between
193.243.158.1 and 193.243.158.1 (inclusive).
193.243.158.1 and 193.243.158.1 (inclusive).
VinNest ISP Autonomous System
AS28750
or else
ip4:
193.243.158.17 / 32
pass
if the sender's IP is between
193.243.158.17 and 193.243.158.17 (inclusive).
193.243.158.17 and 193.243.158.17 (inclusive).
VinNest ISP Autonomous System
AS28750
or else
~all
soft fail
the email's SPF check.
Included records
v=spf1 a mx ptr ip4:193.243.158.20 ip4:193.243.158.1 ip4:193.243.158.17 ~all
The 'ptr' mechanism shouldn't be used because it's slow, resource intensive, and not very reliable