1 / 10
Lookups
0
Issues
2
IPv4 addresses
2
IPv6 addresses
Terms
mx
pass
if the sender's IP address is in the A or AAAA record of this domain.
1 IPv4 address
1 IPv6 address
or else
ip4:
37.205.8.145 / 32
pass
if the sender's IP is between
37.205.8.145 and 37.205.8.145 (inclusive).
37.205.8.145 and 37.205.8.145 (inclusive).
MasterDC s.r.o.
AS24971
or else
ip6:
2a03:3b40:fe:55d::1 / 128
pass
if the sender's IP is between
2a03:3b40:fe:55d::1 and 2a03:3b40:fe:55d::1 (inclusive).
2a03:3b40:fe:55d::1 and 2a03:3b40:fe:55d::1 (inclusive).
MasterDC s.r.o.
AS24971
or else
-all
fail
the email's SPF check.
Included records
v=spf1 mx ip4:37.205.8.145 ip6:2a03:3b40:fe:55d::1 -all