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IPv4 addresses
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IPv6 addresses
The 'ptr' mechanism shouldn't be used because it's slow, resource intensive, and not very reliable.
v=spf1 ptr:seinternal.com ptr:antispamcloud.com ptr:spamexperts.com ptr:simplyspamfree.com ~all
Copied
Terms
ptr:
seinternal.com
PTR checks should no longer be used. See
RFC 7208, section 5.5
.
or else
ptr:
antispamcloud.com
PTR checks should no longer be used. See
RFC 7208, section 5.5
.
or else
ptr:
spamexperts.com
PTR checks should no longer be used. See
RFC 7208, section 5.5
.
or else
ptr:
simplyspamfree.com
PTR checks should no longer be used. See
RFC 7208, section 5.5
.
or else
~all
soft fail
the email's SPF check.
Included records
v=spf1 ptr:seinternal.com ptr:antispamcloud.com ptr:spamexperts.com ptr:simplyspamfree.com ~all
The 'ptr' mechanism shouldn't be used because it's slow, resource intensive, and not very reliable