I am active in the Boston chapter of an international organization. The Boston chapter has a LISTSERV list. I have a set of E-Mail addresses (supplied by the international organization) of the members who are (believed to be) in the Boston area. I want to invite those people to join the Boston chapter's LISTSERV list. I am considering creating a DISTRIBUTE job to send out the invitation messages or creating a separate list and just using it once to send out the invitations. I am concerned that the E-Mail addresses that I received from the international organization might have various problems (typos, changed ISP, changed employment, etc.). I don't want to bother MIT's LISTSERV postmasters with error messages about my bad addresses. I know that if I were to create a separate list for the single "invitation" mailing, I could control the contents of all of the Sender, From, and Reply-To fields and although I couldn't control the RFC 821 MAIL FROM (Return-Path) field, I can ensure that bounces to that address don't get to the LISTSERV postmasters. I see that with a DISTRIBUTE job I can control the contents of the From and Reply-To fields. What about the Sender and RFC 821 MAIL FROM (Return-Path) field of a DISTRIBUTE job. Can I control them? If so, how? If not, where do they each point and how could I prevent incoming messages to those addresses from going to the LISTSERV postmasters? /David Rosenberg [log in to unmask] 1-617-253-8054