[At-Large] Fwd: [technical-issues] Banning .xyz email from my company's servers

[Olivier MJ Crepin-Leblond]

Dear Barry,

thanks for your follow-up on this. That's a good idea too. I've checked
the past messages in the queue and spamassassin scores range from 3.4 to
4.9 (with a trigger score required of 5.2). However, can you get a
rejection message sent to the originator of the message? When blocking
at Postfix level, the message is not accepted in the system & a bounce
is issued. A genuine email originator would get a bounce explaining the
bounce and try another method to get in contact. With spamassassin the
message would just get dropped, wouldn't it? (apologies, my spamassassin
coding is a bit crusty)
Kindest regards,

Olivier

On 17/03/2016 05:32, bzs at theworld.com wrote:
> [is this OT, how did this start?]
>
> I use spamassassin system-wide to increase the spam score of a message
> from certain TLDs to near the threshold where it's just rejected.
>
> So for example in local.cf I add a rule like:
>
> header DOTTOP_RULE              From =~ /.*\.top/i
> describe DOTTOP_RULE            BZS 20160226
> score DOTTOP_RULE               2.5
>
> which means just having a .TOP TLD in the From gives it a base score
> of 2.5, so it wouldn't take much more, tripping some other
> spamassassin rules, to just get it blocked entirely.
>
> But it means in theory a very non-spammy msg from that TLD might still
> get through.
>

-- 
Olivier MJ Crépin-Leblond, PhD
http://www.gih.com/ocl.html