1 / 10
Lookups
0
Issues
2
IPv4 addresses
0
IPv6 addresses
Terms
a:
smtp.3u.net
pass
if the sender's IP address is in the A or AAAA record of this domain.
1 IPv4 address
or else
ip4:
81.209.151.4 / 32
pass
if the sender's IP is between
81.209.151.4 and 81.209.151.4 (inclusive).
81.209.151.4 and 81.209.151.4 (inclusive).
3U TELECOM
AS198710
or else
-all
fail
the email's SPF check.
Included records
v=spf1 a:smtp.3u.net ip4:81.209.151.4 -all