On Tue, 09 Aug 2016 09:10:06 +0100, Nicola Piazzi
<nicola.pia...@gruppocomet.it> wrote:
Hi
A lot of time we receive mail that are SPF NONE and have no DKIM
Il will be useful a little plugin that be able to give another chance to
legitimate these emails
A lot of servers use the same machine to send and receive emails,
Plugin must read sender domain and search if the IP used to send to us
is one of the MX record list for domain
This is not intended to exclude other cases, but intended to have a
chance to recognize that is not a spoofed email only
We can think to use not the ip but the C class to get much more hits
For example someone sent from 199.56.23.5 and have mx record 199.56.23.9
can be legitimate because both come from 199.56.23
Have someone something like this ?
Not quite, but assuming you're looking at using it for whitelisting
purposes you can use:
whitelist_from_rcvd *@gruppocommet.it gruppocommet.it
That says that any mail sent with a @gruppocommet.it address that is
received from a host with an rDNS matching gruppocommet.it will be
whitelisted.
It's rather effective and efficient.
https://spamassassin.apache.org/full/3.4.x/doc/Mail_SpamAssassin_Conf.html#whitelist_and_blacklist_options
may tell you more.
