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 <[email protected]>
Sent: Thursday, December 4, 2025 1:49 PM
To: [email protected] <[email protected]>
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
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