What are the techniques that are used to avoid automatic vacation messages from causing mail loops (and unhappy subscribers). I don't use LISTSERV but I assume that similar techniques can be used with V-Mailserver. Jason ===================================================================== Jason Glazer GARD Analytics mailto:[log in to unmask] Building Energy Simulation List Administrator Consultant to ASHRAE 90.1 HVAC/SWH and ECB insert <standard_disclaimer> ph (847) 698 - 5686 fax - 5600