In some very real sense LISTSERV does offer such an option, but ONLY for comformant mail transfer agents. Here is one of my list's AUTO-DEL keywords: * Auto-Delete= Yes,Semi-Auto,Delay(3),Max(25) Here is an example distribution: Date: Sun, 19 Nov 1995 00:00:53 -0500 From: "L-Soft list server at PSUVM (1.8b)" <[log in to unmask]> Subject: FINAID-L: Daily error monitoring report To: [log in to unmask] The following 3 subscribers are currently being monitored: Err First Last Address --- ----- ----- ------- 6 11/16 11/16 Bill Watson <[log in to unmask]> Last error: 550 <[log in to unmask]>... User unknown 5 11/16 11/16 Margaret Beahan <[log in to unmask]> Last error: Mailer pilot.msu.edu said: "550 <[log in to unmask]>... User unknown" 1 11/17 11/17 David Ximenez <[log in to unmask]> Last error: Mailer LONESTAR.JPL.UTSA.EDU said: "550 <[log in to unmask]>... User unknown" Err= Number of delivery errors received thus far First= Date first delivery error was received (mm/dd) Last= Date of most current delivery error (mm/dd) Subscribers will be automatically deleted from the list when delivery errors have been reported for a period of 3 days or more, or when 25 delivery errors have been received, whichever occurs first. Monitoring will cease after 4 days without any reported error. Note: manually deleted subscribers may remain on the monitoring report under an alias address. Such entries will expire eventually; you do not need to do anything about them. -- co-owner INFOSYS, TQM-L, CPARK-L, ERAPPA-L, JANITORS, LDBASE-L, et -L URL:mailto:[log in to unmask] Favorite LISTSERV list: LSTOWN-L Favorite LISTSERV cmd: DATABASE Search