Thank you very much to all! I have solved the problem with your guidance…
After reading the last messages from Mark, Peter and Matt, I decided to dig into the "list address affair (the sender header)"… for my surprise, the email sender was "listname-bounces[at]myhostname" instead of "listname-bounces[at]myhostname.domain_name", after changing the option "host_name" in "General Options" to a full qualified domain name, the problem was solved! My ISP was discarding the messages because the sender was not formatted properly... not a "legal" name for their SPAM filters I think. Regards! Antonio ------------------------------------------------------ Mailman-Users mailing list Mailman-Users@python.org http://mail.python.org/mailman/listinfo/mailman-users Mailman FAQ: http://www.python.org/cgi-bin/faqw-mm.py Searchable Archives: http://www.mail-archive.com/mailman-users%40python.org/ Unsubscribe: http://mail.python.org/mailman/options/mailman-users/archive%40jab.org Security Policy: http://www.python.org/cgi-bin/faqw-mm.py?req=show&file=faq01.027.htp
