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Lookups
1
Issue
83
IPv4 addresses
0
IPv6 addresses
The 'ptr' mechanism shouldn't be used because it's slow, resource intensive, and not very reliable.
v=spf1 a mx ptr ip4:217.26.211.32/28 ip4:217.26.215.0/26 ip4:217.26.219.165/32 ~all
Copied
Terms
a
pass
if the sender's IP address is in the A or AAAA record of this domain.
1 IPv4 address
or else
mx
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:
217.26.211.32 / 28
pass
if the sender's IP is between
217.26.211.32 and 217.26.211.47 (inclusive).
217.26.211.32 and 217.26.211.47 (inclusive).
Serbia BroadBand-Srpske Kablovske mreze d.o.o.
AS31042
or else
ip4:
217.26.215.0 / 26
pass
if the sender's IP is between
217.26.215.0 and 217.26.215.63 (inclusive).
217.26.215.0 and 217.26.215.63 (inclusive).
Serbia BroadBand-Srpske Kablovske mreze d.o.o.
AS31042
or else
ip4:
217.26.219.165 / 32
pass
if the sender's IP is between
217.26.219.165 and 217.26.219.165 (inclusive).
217.26.219.165 and 217.26.219.165 (inclusive).
South-West University "Neofit Rilski"
AS200723
or else
~all
soft fail
the email's SPF check.
Included records
v=spf1 a mx ptr ip4:217.26.211.32/28 ip4:217.26.215.0/26 ip4:217.26.219.165 ~all
The 'ptr' mechanism shouldn't be used because it's slow, resource intensive, and not very reliable
IP ranges
217.26.211.32
/ 28
Serbia BroadBand-Srpske Kablovske mreze d.o.o.
AS31042
217.26.211.32 - 217.26.211.47
16 IP addresses
217.26.215.0
/ 26
Serbia BroadBand-Srpske Kablovske mreze d.o.o.
AS31042
217.26.215.0 - 217.26.215.63
64 IP addresses