-------- Forwarded Message --------
Hello all,
this is just to let you know that after being flooded with 980
spam emails from a myriad of .XYZ email addresses, I have taken
the unprecedented step of blocking the top level domain .XYZ from
our email servers. The flood has been sustained for the past
couple of months and for some reason, the emails manage to go
through our regular filters like SpamAssassin, as well as various
DNS block lists.
Since my company's main servers run Postfix, I did the following:
/etc/postfix/main.cf
smtpd_sender_restrictions = check_sender_access
regexp:/etc/postfix/blocked_tlds
/etc/postfix/blocked_tlds
### block sender access from the following spammy top-level
domains
/\.xyz$/ REJECT Top Level Domain .xyz banned due to spam
We have not received any more significant amount of spam from the
domains listed on
https://www.spamhaus.org/statistics/tlds/
therefore we have not added them to our blocking list yet, but if
any significant amount of spam starts coming in from them, we'll
add them to the blocking list too.
Being a strong supporter of Universal Acceptance of TLDs, I am sad
to have had to reach this point but also being the bill payer in
my company, I could not allow the bandwidth taken nor the time
taken by readers of emails to delete this daily flood of spam from
their Inbox. It is sad that the unwillingness of the domain name
industry to subject themselves to standards of behaviour leads to
domains that are completely untrustable and that need to be
treated as a pest rather than an asset to the Internet.
Kindest regards,
Olivier
--
Olivier MJ Crépin-Leblond, PhD
http://www.gih.com/ocl.html