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Lookups
1
Issue
770
IPv4 addresses
0
IPv6 addresses
The 'ptr' mechanism shouldn't be used because it's slow, resource intensive, and not very reliable.
v=spf1 mx ip4:212.74.96.0/24 ip4:212.74.112.0/24 ip4:212.74.114.0/24 ptr:mail.tiscali.co.uk ?all
Copied
Terms
mx
pass
if the sender's IP address is in the A or AAAA record of this domain.
2 IPv4 addresses
or else
ip4:
212.74.96.0 / 24
pass
if the sender's IP is between
212.74.96.0 and 212.74.96.255 (inclusive).
212.74.96.0 and 212.74.96.255 (inclusive).
TalkTalk Communications
AS13285
or else
ip4:
212.74.112.0 / 24
pass
if the sender's IP is between
212.74.112.0 and 212.74.112.255 (inclusive).
212.74.112.0 and 212.74.112.255 (inclusive).
TalkTalk Communications
AS13285
or else
ip4:
212.74.114.0 / 24
pass
if the sender's IP is between
212.74.114.0 and 212.74.114.255 (inclusive).
212.74.114.0 and 212.74.114.255 (inclusive).
TalkTalk Communications
AS13285
or else
ptr:
mail.tiscali.co.uk
PTR checks should no longer be used. See
RFC 7208, section 5.5
.
or else
?all
Don't state if this IP is allowed to send this email.
Included records
v=spf1 mx ip4:212.74.96.0/24 ip4:212.74.112.0/24 ip4:212.74.114.0/24 ptr:mail.tiscali.co.uk ?all
The 'ptr' mechanism shouldn't be used because it's slow, resource intensive, and not very reliable