[Elecraft] I'm now SPAM (was: Re: P3 substitute?)

[David Woolley]

Phishers often use URL shorteners to obfuscate the true location of 
their phishing web site.  Spam filters generally score various 
characteristics, and I suspect that the use of the shortener service 
weighted the score towards rejection, and the message probably would 
have gone through if you used the original URL.  The spam filter can't 
look up every shortened URL to find out whether it points at a site that 
is associated with spam, so it will assume that there is a significant 
probability that a shortened URL leads to a site that it would block.

In fact, my inbound spam checker scored the digest with 2.5 of the 5 
points it would need to soft reject it (flag as spam but let it 
through), based on the use of the shortened URL:

   0.5 FSL_HAS_TINYURL        URI: No description available.
   1.0 SHORT_URL_REDIR        BODY: Message has shortened URL that 
resulted in a
                              valid redirection
   1.0 HAS_SHORT_URL          BODY: Message has one or more shortened URLs

although various features got negative scores, so the final result was 
1.5 out of 5. The digest allows more chance for other factors to cancel 
out spam indicators.

I'd use similar reasoning in manually vetting URLs.  In the absence of 
strong indications of legitimacy, I would be very reluctant to follow a 
shortened URL, especially if received in a medium that could easily 
handle the full URL.

-- 
David Woolley

On 04/12/2025 22:45, Andy Durbin wrote:
> Second attempt to get past the SPAM police.
> 
> Andy, k3wyc
> 
> ________________________________
> From: Andy Durbin <a.durbin at msn.com>
> Sent: Thursday, December 4, 2025 1:49 PM
> To: elecraft at mailman.qth.net <elecraft at mailman.qth.net>
> Subject: P3 substitute?
> 
> I use an SDRPlay RSP with HDSDR with my TS-590S.
> 
> I have never used a P3 so don't know what, if anything, is special about it.  I can see all of any band or zoom in. I can click on any signal of interest to tune my TX-590S to it.  If I wish to I can use the panadapter to monitor a band other than that tuned on the TS-590S.  The RSP is an independent receiver so it is not constrained to the transceiver IF.
> 
> Years ago I gave a presentation on panadapters to my local club.  You can find it here - REDACTED
> 
> 73,
> Andy, k3wyc
>