Re: blocking compute-1.amazonaws.com

John Hardin <[email protected]>
Newsgroups gmane.mail.spam.spamassassin.general
Message-ID <[email protected]>
On Fri, 11 Oct 2024, Marc wrote:

> We can just block hostnames that resolve to compute-1.amazonaws.com not? Amazon has own smtp range, or am I wrong?

If you just want to block those outright, look at the features in your MX 
(sendmail, postfix, etc.) - it verly likely has features to do a reverse 
lookup of the sender's IP and whitelist/blacklist for domain names from 
that so you block the sender at SMTP time.

Don't get tunnel vision about SpamAssassin being the only tool available 
for this sort of thing... :)


-- 
  John Hardin KA7OHZ                    http://www.impsec.org/~jhardin/
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