4 / 10
Lookups
1
Issue
201
IPv4 addresses
0
IPv6 addresses
The 'ptr' mechanism shouldn't be used because it's slow, resource intensive, and not very reliable.
Terms
mx
pass
if the sender's IP address is in the A or AAAA record of this domain.
2 IPv4 addresses
or else
a
pass
if the sender's IP address is in the A or AAAA record of this domain.
1 IPv4 address
or else
include:
spf1.werk21system.de
Evaluate this SPF record and
pass
if it
passes.
This include does nothing if the included record returns fail, soft fail, or neutral.
or else
~all
soft fail
the email's SPF check.
Included records
v=spf1 mx a include:spf1.werk21system.de ~all
8 x ip4 ptr:werk21system.de ~all
The 'ptr' mechanism shouldn't be used because it's slow, resource intensive, and not very reliable
IP ranges
185.138.142.128
/ 26
NTT Global Data Centers EMEA
AS203329
185.138.142.128 - 185.138.142.191
64 IP addresses