“It is just our way.” That has such a Zen sound to it, like you must find your
own path to enlightenment.
I am still confused by both your suggestion and Randy’s. They both seem to be
based on the From line, which would not be declude.com. Here are the first few
header lines from one of
Why not use the HELO or REVDNS? REVDNS is going to be the safest because of the
difficulty in forging it
HELO -10 CONTAINS smtp.declude.com
or
HELO WHITELIST CONTAINS smtp.declude.com
REVDNS -10 CONTAINS smtp.declude.com
or
REVDNS WHITELIST CONTAINS smtp.declude.com
or even blanket the headers
Why not use the HELO or REVDNS? REVDNS is going to be the safest
because of the difficulty in forging it
Not always... if the domain has a hard-fail SPF record that isn't
*itself* dependent on forgeable records (only uses IPs and forward DNS
entries), then the MAILFROM can't
