Re: Penalty for no/bad SPF

2018-01-24 Thread John Hardin
On Wed, 24 Jan 2018, Bill Cole wrote: On 24 Jan 2018, at 17:20 (-0500), John Hardin wrote: On Wed, 24 Jan 2018, Dianne Skoll wrote: At this point, I would be willing to penalize sites with bad SPF records (syntactically invalid; more than one different SPF record attached to the same domain,

Re: Penalty for no/bad SPF

2018-01-24 Thread Bill Cole
On 24 Jan 2018, at 17:20 (-0500), John Hardin wrote: On Wed, 24 Jan 2018, Dianne Skoll wrote: At this point, I would be willing to penalize sites with bad SPF records (syntactically invalid; more than one different SPF record attached to the same domain, etc.) Those people really deserve pena

Re: Penalty for no/bad SPF

2018-01-24 Thread John Hardin
On Wed, 24 Jan 2018, Dianne Skoll wrote: On Wed, 24 Jan 2018 14:20:57 -0800 (PST) John Hardin wrote: At this point, I would be willing to penalize sites with bad SPF records (syntactically invalid; more than one different SPF record attached to the same domain, etc.) Those people really dese

Re: Pretty good spoof of AmEx

2018-01-24 Thread RW
On Thu, 25 Jan 2018 01:05:48 + RW wrote: > On Wed, 24 Jan 2018 03:07:48 -0500 > Rupert Gallagher wrote: > > > To: address matches Reply-To: address. > > > From: Rupert Gallagher > Reply-To: Rupert Gallagher Sorry I misread that.

Re: Pretty good spoof of AmEx

2018-01-24 Thread RW
On Wed, 24 Jan 2018 03:07:48 -0500 Rupert Gallagher wrote: > To: address matches Reply-To: address. From: Rupert Gallagher Reply-To: Rupert Gallagher

Re: Penalty for no/bad SPF

2018-01-24 Thread Dianne Skoll
On Wed, 24 Jan 2018 14:20:57 -0800 (PST) John Hardin wrote: > > At this point, I would be willing to penalize sites with bad SPF > > records (syntactically invalid; more than one different SPF record > > attached to the same domain, etc.) Those people really deserve > > penalties because they've

Re: kam corpus

2018-01-24 Thread @lbutlr
On 24 Jan 2018, at 04:08, Rupert Gallagher wrote: > Is this the "official" version of kam.cf? > > http://www.pccc.com/downloads/SpamAssassin/contrib/ > > The file is huge, and consists of ad-hoc rules against spammy keywords. Is less than 300K huge? That does remind me, though, does SpamAssa

Re: Penalty for no/bad SPF

2018-01-24 Thread Ian Zimmerman
On 2018-01-24 18:10, Bill Cole wrote: > 1. Mail with an envelope sender domain that has no SPF record is more > likely to be spam than the overall mail stream. > > 2. Mail whose envelope sender domain has a published SPF record which > repudiates the sending IP is more likely to be spam than the

Re: Penalty for no/bad SPF

2018-01-24 Thread Vincent Fox
SPF is designed for authentication, not spam filtering. Using a crowbar as a hammer. We apply a small score mainly so we see the elements reported. If the "majors" are using in their hygiene stack, for evalation like you are, I haven't seen much evidence of that. Of course it's hard to test

Re: Penalty for no/bad SPF

2018-01-24 Thread Bill Cole
On 24 Jan 2018, at 14:59 (-0500), David Jones wrote: On 01/24/2018 01:33 PM, Bill Cole wrote: On 24 Jan 2018, at 9:12, David Jones wrote: What does everyone think about slowly increasing the score for SPF_NONE and SPF_FAIL over time in the SA rulesets to force the awareness and importance of

Re: Penalty for no/bad SPF

2018-01-24 Thread Rupert Gallagher
If all those smarties who speak against spf would simply shut-up and implement it correctly, with dkim and dmarc, and read the dmarc reports, then they would know how valuable it is. On raising the score: done, long ago, happy with the outcome, and strongly recommend it.

Re: Penalty for no/bad SPF

2018-01-24 Thread Martin Gregorie
On Wed, 2018-01-24 at 14:24 -0800, John Hardin wrote: > I think he was referring to MTA-side forwarding, not forwarding an > email you received (which forward comes *from you*). > I was wondering if this could be related to Joseph's comment that "DMARC is destroying forwarding and mailing lists" a

Re: Penalty for no/bad SPF

2018-01-24 Thread David Jones
On 01/24/2018 04:00 PM, Vincent Fox wrote: so there's this argument that goes: "well we won't really see the benefits until it's FULLY and RIGIDLY implemented." However, look at all the major providers with messed up records and neutral or soft fail.  They should have the most resources to

Re: Penalty for no/bad SPF

2018-01-24 Thread John Hardin
On Wed, 24 Jan 2018, Martin Gregorie wrote: On Wed, 2018-01-24 at 16:45 -0500, Joseph Brennan wrote: DMARC is not a standard according to RFC 7489, "Status of This Memo". It's just informational, for those who want to play the game. DMARC is destroying forwarding and mailing lists, Could this

Re: Penalty for no/bad SPF

2018-01-24 Thread John Hardin
On Wed, 24 Jan 2018, Dianne Skoll wrote: At this point, I would be willing to penalize sites with bad SPF records (syntactically invalid; more than one different SPF record attached to the same domain, etc.) Those people really deserve penalties because they've messed up. Does that include "+

Re: Penalty for no/bad SPF

2018-01-24 Thread Martin Gregorie
On Wed, 2018-01-24 at 16:45 -0500, Joseph Brennan wrote: > DMARC is not a standard according to RFC 7489, "Status of This Memo". > It's just informational, for those who want to play the game. DMARC > is destroying forwarding and mailing lists, > Could this be why recent releases of the Evolution M

Re: Penalty for no/bad SPF

2018-01-24 Thread David Jones
On 01/24/2018 03:45 PM, Joseph Brennan wrote: David Jones wrote: SA could be the large force that helps improve the mail standards like DMARC -- SPF + DKIM with a little extra on top. DMARC is not a standard according to RFC 7489, "Status of This Memo". It's just informational, for those w

Re: Penalty for no/bad SPF

2018-01-24 Thread Vincent Fox
so there's this argument that goes: "well we won't really see the benefits until it's FULLY and RIGIDLY implemented." However, look at all the major providers with messed up records and neutral or soft fail. They should have the most resources to accomplish this and the most incentives to

Re: Penalty for no/bad SPF

2018-01-24 Thread Joseph Brennan
David Jones wrote: SA could be the large force that helps improve the mail standards like DMARC -- SPF + DKIM with a little extra on top. DMARC is not a standard according to RFC 7489, "Status of This Memo". It's just informational, for those who want to play the game. DMARC is destroying

Re: Pretty good spoof of AmEx

2018-01-24 Thread Bill Cole
On 23 Jan 2018, at 21:26 (-0500), David Jones wrote: We could setup a 60_blacklist_from.cf file in the SA ruleset for definite bad domains but that's probably not the best place to maintain that. It really should be in major DBLs that SA already knows to check. +1 Unsurprisingly, running a

Re: Penalty for no/bad SPF

2018-01-24 Thread Dianne Skoll
At this point, I would be willing to penalize sites with bad SPF records (syntactically invalid; more than one different SPF record attached to the same domain, etc.) Those people really deserve penalties because they've messed up. I would not be willing to penalize sites with *no* SPF at all jus

Re: Penalty for no/bad SPF

2018-01-24 Thread David Jones
On 01/24/2018 01:58 PM, Vincent Fox wrote: I'd rather not think about the manhours I've wasted this year on SPF. The guy at Evotec.com, among others, who thinks rejecting for SOFTFAIL is a perfectly valid anti-spoofing strategy and doesn't blink when pointed to RFC 4408 sec 2.5.5. Vendors w

Re: Penalty for no/bad SPF

2018-01-24 Thread Vincent Fox
I'd rather not think about the manhours I've wasted this year on SPF. The guy at Evotec.com, among others, who thinks rejecting for SOFTFAIL is a perfectly valid anti-spoofing strategy and doesn't blink when pointed to RFC 4408 sec 2.5.5. Vendors who's first response is: "Our LEGIT spamer

Re: Penalty for no/bad SPF

2018-01-24 Thread David Jones
On 01/24/2018 01:33 PM, Bill Cole wrote: On 24 Jan 2018, at 9:12, David Jones wrote: What does everyone think about slowly increasing the score for SPF_NONE and SPF_FAIL over time in the SA rulesets to force the awareness and importance of proper SPF? -1 In every real mailstream I've worked

Re: Penalty for no/bad SPF

2018-01-24 Thread David Jones
On 01/24/2018 01:01 PM, Vincent Fox wrote: SPF is designed for whitelisting, not blacklist. Not true. We are supposed to reject email that doesn't pass SPF checks if the domain has told us to with "-all". That is a form of blacklisting controlled by the domain itself to protect it's own b

Re: Penalty for no/bad SPF

2018-01-24 Thread Bill Cole
On 24 Jan 2018, at 9:12, David Jones wrote: What does everyone think about slowly increasing the score for SPF_NONE and SPF_FAIL over time in the SA rulesets to force the awareness and importance of proper SPF? -1 In every real mailstream I've worked with in the lifetime of SPF, lack of SPF

Re: Penalty for no/bad SPF

2018-01-24 Thread Martin Gregorie
On Wed, 2018-01-24 at 19:01 +, Vincent Fox wrote: > SPF is a zombie legacy that someone should shoot in > the head. > SPF is still good for what I've always thought was its main use: detecting spam delivered by backscatter. Given that its dirt cheap to implement, and easy too verify now that t

Re: Penalty for no/bad SPF

2018-01-24 Thread Dianne Skoll
On Wed, 24 Jan 2018 19:01:28 + Vincent Fox wrote: > SPF is a zombie legacy that someone should shoot in > the head. +1 > Maybe then we could design something that > is useful for what we all desire, which is properly > authenticating senders. We cannot authenticate senders and keep SMTP as

Re: kam corpus

2018-01-24 Thread Rupert Gallagher
We had three spam messages in about 8 months? I lost count. Our clients are so used to have a clean inbox that they spot a spam like the proverbial white fly. Sent from ProtonMail Mobile On Wed, Jan 24, 2018 at 13:34, Kevin A. McGrail wrote: > On 1/24/2018 6:08 AM, Rupert Gallagher wrote: > >

Re: Penalty for no/bad SPF

2018-01-24 Thread Vincent Fox
SPF is designed for whitelisting, not blacklist. Remember when "shields" appeared in mail clients, and how fast that feature disappeared? Far too many people clicking on phish that seemed "authentic". With the explosion of cheap domains and registrars, there's really no snowshoe Black Hat o

Re: Penalty for no/bad SPF

2018-01-24 Thread Giovanni Bechis
On Wed, Jan 24, 2018 at 08:12:19AM -0600, David Jones wrote: > Google Chrome and other browsers have been slowly penalizing sites not > using encryption to the point that soon they will be alerting users of > plain HTTP sites. This along with letsencrypt.org has been moving the > HTTPS bar forw

Penalty for no/bad SPF

2018-01-24 Thread David Jones
Google Chrome and other browsers have been slowly penalizing sites not using encryption to the point that soon they will be alerting users of plain HTTP sites. This along with letsencrypt.org has been moving the HTTPS bar forward to improve web security and privacy. I think it's time for the

Re: kam corpus

2018-01-24 Thread Kevin A. McGrail
On 1/24/2018 6:08 AM, Rupert Gallagher wrote: Is this the "official" version of kam.cf? http://www.pccc.com/downloads/SpamAssassin/contrib/ Yes.  Are there unofficial versions? The file is huge, and consists of ad-hoc rules against spammy keywords. We use a completely different approach,

kam corpus

2018-01-24 Thread Rupert Gallagher
Is this the "official" version of kam.cf? http://www.pccc.com/downloads/SpamAssassin/contrib/ The file is huge, and consists of ad-hoc rules against spammy keywords. We use a completely different approach, resulting in few general rules and a short whitelist. We hardly see any kam-esque spam, b

Re: Pretty good spoof of AmEx

2018-01-24 Thread Rupert Gallagher
To: address matches Reply-To: address. Sent from ProtonMail Mobile