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1
Issue
1,283
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 ptr ip4:93.185.111.1/24 ip4:5.180.200.0/22 -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
a
pass
if the sender's IP address is in the A or AAAA record of this domain.
1 IPv4 address
or else
PTR checks should no longer be used. See
RFC 7208, section 5.5
.
or else
ip4:
93.185.111.1 / 24
pass
if the sender's IP is between
93.185.111.0 and 93.185.111.255 (inclusive).
93.185.111.0 and 93.185.111.255 (inclusive).
VSHosting s.r.o.
AS43541
or else
ip4:
5.180.200.0 / 22
pass
if the sender's IP is between
5.180.200.0 and 5.180.203.255 (inclusive).
5.180.200.0 and 5.180.203.255 (inclusive).
MasterDC s.r.o.
AS24971
or else
-all
fail
the email's SPF check.
Included records
v=spf1 mx a ptr ip4:93.185.111.1/24 ip4:5.180.200.0/22 -all
The 'ptr' mechanism shouldn't be used because it's slow, resource intensive, and not very reliable