> If you are running MX V3.3 or PMDF V4.2, LISTSERV will delete the > recipients automatically. Otherwise the best is to wait for the list > owners to delete the recipients on their own. The cost to your system of > bouncing off these messages is a droplet in the ocean when compared to > the cost of running 5000 jobs with a global lookup for 272 other > institutions. Is there documentation someplace of what has to be in the bounce message in order for LISTSERV to do automatic deletion? We have a home grown mail system that could probably generate what's needed, if we know what it is.