Mailman 2.1.4 through 2.1.6 allows remote attackers to cause a denial of service via a message that causes the server to "fail with an Overflow on bad date data in a processed message," a different vulnerability than CVE-2005-3573.
The password generation in mailman before 2.1.5 generates only 5 million unique passwords, which makes it easier for remote attackers to guess passwords via a brute force attack.