That was sort of intentional. I feel that probing every URL from bing.com, msn.com, and google.com just to see if it's a redirector is wasteful and potentially dangerous. The other domains (list-manage.com, etc.) are less dangerous, but you still run the risk of hitting unsubscribe links and tracking pixels. The only "safe" way to probe them is if the path matches a known redirector pattern. I'm happy to discuss it further if there is a better solution. P.S. I couldn't find any examples of a redirector URL from msn.com. Are you aware of any? Thanks Kent On Tue, May 19, 2026 at 02:53 AM, [email protected] wrote: On 5/19/26 8:16 AM, [email protected] (mailto:[email protected]) wrote: Author: fkento Date: Tue May 19 06:16:49 2026 New Revision: 1934386
Log: Prevent wasted HTTP traffic to non-redirect URLs I think this commit will disable redirector checks for some domains for all users that are not running trunk. We need a `if !can(Mail::SpamAssassin::Plugin::Redirectors::has_url_redirector_path)` to cover previous versions IMHO. Cheers Giovanni * awstrack.me * exactag.com * cc.rs6.net * mandrillapp.com * list-manage.com * bing.com * msn.com * msn.com.br Modified: spamassassin/trunk/rules/25_url_redirectors.cf Modified: spamassassin/trunk/rules/25_url_redirectors.cf ============================================================================== --- spamassassin/trunk/rules/25_url_redirectors.cf Tue May 19 06:12:45 2026 (r1934385) +++ spamassassin/trunk/rules/25_url_redirectors.cf Tue May 19 06:16:49 2026 (r1934386) @@ -52,22 +52,16 @@ score REDIR_URL_LOOP 0.01 url_redirector .allaincemh.com url_redirector .australia4wdrentals.com -url_redirector .awstrack.me url_redirector .benchurl.com url_redirector .blob.core.windows.net -url_redirector .cc.rs6.net url_redirector .ct.sendgrid.net -url_redirector .exactag.com url_redirector .hosted.phplist.com url_redirector .href.li url_redirector .maverickcrm.com -url_redirector .msn.com -url_redirector .msn.com.br url_redirector .yandex.net url_redirector .yandex.ru url_redirector auctiva.com url_redirector awin1.com -url_redirector bing.com url_redirector cqbbs.cc url_redirector cdn.dragon.cere.network url_redirector channelchief.varindia.com @@ -81,7 +75,6 @@ url_redirector link.sowl.to url_redirector linklock.titanhq.com url_redirector links.e.shopmyexchange.com url_redirector mccarthysearch.com -url_redirector mandrillapp.com url_redirector notifications.googleapis.com url_redirector post.spmailtechnolo.com url_redirector secure-web.cisco.com @@ -111,19 +104,12 @@ url_redirector_get t.nypost.com url_redirector_get track.pstmrk.it if can(Mail::SpamAssassin::Plugin::Redirectors::has_url_redirector_path) - clear_url_redirector .awstrack.me url_redirector .awstrack.me/L0/ - - clear_url_redirector .exactag.com url_redirector .exactag.com/cl.aspx - - clear_url_redirector .cc.rs6.net url_redirector .cc.rs6.net/tn.jsp - - clear_url_redirector mandrillapp.com url_redirector mandrillapp.com/track/click - url_redirector .list-manage.com/track/click + url_redirector bing.com/ck/a url_redirector substack.com/redirect/ url_redirector go.pardot.com/e/
