<spf> check online
send an email message to:
check online the SPF validation results:
(it will take a minute to appear)
RealSender SPF check online will add a subject prefix, if the message has not been authenticated correctly:
!! spf-fail !! the smtp server is not listed among the authorized ones and the email should be rejected or discarded !! spf-softfail !! the smtp server is not listed among the authorized ones but this case should be treated as a "softfail" !! spf-neutral !! the SPF record specifies explicitly that nothing can be said about validity !! spf-none !! the sender domain contains no information to authenticate the email
Sometimes the information recorded at domain level is not correct/understandable.
!! spf-permerror !! a permanent error has occurred (eg. badly formatted SPF record) !! spf-temperror !! a transient error has occurred
SPF check is made against the “Mail-From” email address, that is hidden in the email headers.
Only the “From” email address is visible. If their root domains are different, this warning is displayed:
!! spf-diff !! the "Mail-From" and the "From" root domains are different
If the message passes both SPF check AND SPF alignment check for DMARC (relaxed alignment), you will get:
|OK| spf-pass your email passes SPF check + SPF alignment check
If only one, SPF OR DKIM, passes the alignment check for DMARC (relaxed alignment),
the message is still considered “OK” (trusted) and the ~ (tilde) symbol is added at the beginning:
|~OK| spf-pass your email passes SPF check (not the alignment) + DKIM alignment check