The way I understood that was that AWS/EC2 has a policy that the servers on this IP range are not supposed to send e-mail directly but through specific SMTP servers, and that Spamhaus knows this policy and blocks because of it. So another option could be to use a SMTP server assigned by AWS/EC2, I guess, and that would make SpamHaus happy, too.
But as I said, it's not a problem for me since I control my e-mail server and can turn off the e-mail server's spam protection temporarily. You could just wait and see if this affects anyone else, and if not, who cares. :P
Re: Bugzilla's IP is in the Spamhaus blacklist
But as I said, it's not a problem for me since I control my e-mail server and can turn off the e-mail server's spam protection temporarily. You could just wait and see if this affects anyone else, and if not, who cares. :P