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 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