Hi > My recommendation is to recognize that 1-bit binary blocklistings > aren't granular enough to account for shared environments without > causing false positives.
Agreed, the blacklist scores adds to the SpamAssassin score. That is why not every email sent from that IP is rejected as spam but some are. Result: Sender complains to recipient (who uses our anti-spam services) that some of his emails bounce and microsoft not providing any help to address the issue. Recipient asks us to please solve the issue, caused by another microsoft customer using that shared ip. Even worse, I start suspecting that microsoft uses regionally grouped shared ip addresses. Maybe somebody could confirm? The spam received which caused the listing was from an organisation based in Geneva Switzerland (and as I recall it's not the first time that organisation 'acquires email-address lists in good faith') and this (still under investigation) seemed to cause problems mainly for other Switzerland based Office365 customers. -- Mit freundlichen Grüssen -Benoît Panizzon- @ HomeOffice und normal erreichbar -- I m p r o W a r e A G - Leiter Commerce Kunden ______________________________________________________ Zurlindenstrasse 29 Tel +41 61 826 93 00 CH-4133 Pratteln Fax +41 61 826 93 01 Schweiz Web http://www.imp.ch ______________________________________________________ _______________________________________________ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop
