On Thu, 22 Apr 2021, Axb wrote:
On 4/22/21 4:07 AM, John Hardin wrote:
Prompted by seeing this sort of thing in SA Users List spams:
Unsubscribe
https://u21002357.ct.sendgrid.net/asm/unsubscribe/?mumblemumble
Should we add "util_rb_3tld ct.sendgrid.net" so that maybe URIBL could help
out with catching abusive sendgrid accounts?
dirt is shared with legit users - too risky
For all of sendgrid, agreed. But isn't that four-part feedback hostname
specific to a given sendgrid account? The hostname part matches the
account number in the envelope from, which is already being used to detect
abusive sendgrid accounts.
Return-Path: <[email protected]>
I'm suggesting a potential mechanism to focus on the account number part
of that URL, not on punishing sendgrid as a whole...
--
John Hardin KA7OHZ http://www.impsec.org/~jhardin/
[email protected] pgpk -a [email protected]
key: 0xB8732E79 -- 2D8C 34F4 6411 F507 136C AF76 D822 E6E6 B873 2E79
