At 12:52 06-02-2009, Nandini Mocherla wrote:
I am new to postfix/SpamAssassin and thinking for a way to block the
email address which does not come from that domain. For example, if
someone with a @xxx.com email sends to a list it must come from a
server in the xxx.com domain else it should be rejected. Is it
possible to do this? As there is every possibility that spammers can
also send with real
That's similar to SPF. You can configure Postfix to block these
messages through policyd or a milter.
user's id and I am planning to have a check that would be able to
compare the From: and the Message-Id domains to check for spoofed
messages coming in from an open relay. Its just an idea to
eliminate every possible attack. As i don't have much experience with
There isn't any correlation between the domain part of the address
used in the From: and what appears in the Message-ID.
postfix, just installed/configured a couple of days ago any
suggestions in this regard will be highly helpful for me. I have
also read some whre about Sender Score Certified support in
SpamAssassin. But not sure how this works? Will it check the
senders from address and compare it with the domain?
There are three RCVD_IN_BSP_ rules for that.
Regards,
-sm
