> On Nov 6, 2017, at 12:45 PM, @lbutlr <krem...@kreme.com> wrote:
>
>
> # cat /etc/postfix/helo_checks.pcre
> […]
> /.*infusionmail.com$/ 550 Infusionmail is not wanted or welcome
> /.*\yahoo\.com/ 550 Yahoo.com is not allowed here, use gmail or someone who
> hasn't leaked 3 billion passwords
> /\.(com|net|org|edu|gov|ca|mx|de|dk|fi|uk|us|tv|info|biz|eu|es|il|it|nl|name|jp|host)$/
> DUNNO
> /.*webinar.com/ 550 Die in a Fire spammer scum
> /.*xpoof\.us/ 550 Die is a Fire spammer scum
> /.*\.*/ 550 Mail for this TLD is not allowed
>
> (those are the TLDs that my server gets mail from, not recommending anyone
> else use that list).
And thus we balkanize the Internet. I would discourage anyone
from deploying such filters, IMHO they do more harm than good.
There are many legitimate domains under ".xyz", ".ovh", ...
and much junk email from ".biz" and ".info". Use decent RBLs
and content-based filters, avoid crude tools that impose
indiscriminate restrictions.
The above is a bad idea, that may be tolerable for their
creator, but such things do harm at a global level.
Don't do it.
--
Viktor.
