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Lookups
1
Issue
3
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 a:mail.mylib.eu ip4:148.69.169.210 ptr:mail.mylib.eu -all
Copied
Terms
mx
pass
if the sender's IP address is in the A or AAAA record of this domain.
1 IPv4 address
or else
pass
if the sender's IP address is in the A or AAAA record of this domain.
1 IPv4 address
or else
ip4:
148.69.169.210 / 32
pass
if the sender's IP is between
148.69.169.210 and 148.69.169.210 (inclusive).
148.69.169.210 and 148.69.169.210 (inclusive).
Vodafone Portugal
AS12353
or else
ptr:
mail.mylib.eu
PTR checks should no longer be used. See
RFC 7208, section 5.5
.
or else
-all
fail
the email's SPF check.
Included records
v=spf1 mx a:mail.mylib.eu ip4:148.69.169.210 ptr:mail.mylib.eu -all
The 'ptr' mechanism shouldn't be used because it's slow, resource intensive, and not very reliable