9 / 10
Lookups
1
Issue
520
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 ip4:195.64.138.0/23 ptr a:mail.interdesk.ch a:idmx.interdesk.ch a:scan02.globalmx.ch a:scan02.globalmx.ch a:exmail.xauth.ch a:smtp.globalmx.ch a:mail.schweiz.net ~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
ip4:
195.64.138.0 / 23
pass
if the sender's IP is between
195.64.138.0 and 195.64.139.255 (inclusive).
195.64.138.0 and 195.64.139.255 (inclusive).
Telconet
AS42085
or else
ptr:
.
PTR checks should no longer be used. See
RFC 7208, section 5.5
.
or else
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
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
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
pass
if the sender's IP address is in the A or AAAA record of this domain.
1 IPv4 address
or else
~all
soft fail
the email's SPF check.
Included records
v=spf1 mx ip4:195.64.138.0/23 ptr a:mail.interdesk.ch a:idmx.interdesk.ch a:scan02.globalmx.ch a:scan02.globalmx.ch a:exmail.xauth.ch a:smtp.globalmx.ch a:mail.schweiz.net ~all
The 'ptr' mechanism shouldn't be used because it's slow, resource intensive, and not very reliable