3 / 10
Lookups
1
Issue
514
IPv4 addresses
0
IPv6 addresses
The 'ptr' mechanism shouldn't be used because it's slow, resource intensive, and not very reliable.
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:
193.243.158.0 / 23
pass
if the sender's IP is between
193.243.158.0 and 193.243.159.255 (inclusive).
193.243.158.0 and 193.243.159.255 (inclusive).
VinNest ISP Autonomous System
AS28750
or else
-all
fail
the email's SPF check.
Included records
v=spf1 a mx ptr ip4:193.243.158.0/23 -all
The 'ptr' mechanism shouldn't be used because it's slow, resource intensive, and not very reliable
IP ranges
193.243.158.0
/ 23
VinNest ISP Autonomous System
AS28750
193.243.158.0 - 193.243.159.255
512 IP addresses