From: Alex <mysqlstud...@gmail.com>

>On Sun, Apr 30, 2017 at 3:32 PM, David Jones <djo...@ena.com> wrote:
>>>From: Alex <mysqlstud...@gmail.com>
>>
>>>> 99_mailspike.cf
>>>> -----------------------
>>>> shortcircuit RCVD_IN_MSPIKE_H5 on
>>>>
>>>> score RCVD_IN_MSPIKE_H4 -3.2
>>>...
>>
>>>I've actually done this, but backed off on the shortcircuit because
>>>there were several instances where the email originated from a site
>>>with a good reputation, but was clearly spam. I had enabled it, then
>>>ignored it, and it was a big problem.

>It was a while ago, so I don't really recall what the messages were,
>but it was really far from a constantcontact or just some marketing
>spam, iirc.

>I'll create a filter that sorts the MSPIKE messages for a while, and
>see what I find.

It doesn't hurt anything to put those rules in place with a score of
0.001 or -0.001, let them run a while, then do some log analysis.

>> I have a huge list (thousands of entries) of whitelist_auth domains
>> of senders which allows me to crank up the sensitivity of content
>> checks and RBLs in SA and have very few complaints from customers.

>I've done that to a large extent as well, but also concerned that some
>of these legitimate senders get hacked on occasion, and misconfigured,
>so I'm perhaps a bit more apprehensive than you to go all out.

Mass senders and system-generated emails typically don't get hacked or
compromised.  You really only have to worry about real human mailboxes
that won't be on those shortcircuit'd rules.  Notice I don't have any short-
circuit'd senderscore.org rules, just these:

shortcircuit RCVD_IN_MSPIKE_H5
shortcircuit USER_IN_WHITELIST on
shortcircuit USER_IN_DEF_WHITELIST on
shortcircuit USER_IN_BLACKLIST on
shortcircuit USER_IN_DKIM_WHITELIST on
shortcircuit USER_IN_DEF_DKIM_WL on
shortcircuit USER_IN_SPF_WHITELIST on
shortcircuit USER_IN_DEF_SPF_WL on
shortcircuit RCVD_IN_RP_CERTIFIED on
shortcircuit RCVD_IN_RP_SAFE on
shortcircuit RCVD_IN_DNSWL_HI on
shortcircuit RCVD_IN_IADB_LISTED on
shortcircuit RCVD_IN_IADB_SPF on
shortcircuit RCVD_IN_IADB_DK on
shortcircuit RCVD_IN_IADB_RDNS on
shortcircuit RCVD_IN_IADB_SENDERID on
shortcircuit RCVD_IN_IADB_OPTIN on

I have had 2 instances of spam from some senders listed in on of the
rules above over the past 3 or 4 years.  In in both cases, the senders
had abuse report headers that I submitted to them and they took
immediate action to block the sender.  That is how it should work so
I started adding abuse headers to our outbound mail to be a good
Internet citizen.

Dave

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