Senthil_OR@Dell.com wrote:
The Message ID for that matter has some <number>@<yourisp> and has some logic of tracking. ( what logic?) If its simple leave it to me :), if it interesting, why not share across?
Probably Mailman developers have the correct answers. Mailman could be configured in several ways, and the number looks like an id with timestamp. My google research led only to: http://mail.python.org/pipermail/mailman-developers/2002-April/011405.html http://mail.gnu.org/spam.html http://mail.python.org/pipermail/mailman-developers/2003-October/015981.html http://www.mail-archive.com/mailman-checkins@python.org/msg04663.html http://mail.python.org/pipermail/mailman-developers/2001-June/008965.html http://msgs.securepoint.com/cgi-bin/get/mailman-users-0404/12.html