We have a problem with the 'sub' command. Look at the following 'From:' field. The user registered with an odd last name, and LISTSERV should have reacted to it, it didn't. Maybe something to think about for release 1.6, or the 2.1th release of the MAILER? Your mail was not delivered to some or all of its intended recipients for the following reason(s): Syntax error in field- From Error loop detected. Another network mailer sent an invalid file. --------------------RETURNED MAIL FILE-------------------- Date: Sun, 6 Nov 88 17:28:44 GMT Reply-To: Sistem ile ilgili tartisma <YARDIMCI@TREARN> Sender: Sistem ile ilgili tartisma <YARDIMCI@TREARN> From: Lokman zkan 77 91- 14 44 <OEYO8701@TREARN> To: Mehmet Ali TARKAN <TARKAN@TRFIRAT> Selam , Sistemde Pascal ve yeni kurulacak sistemde C varmis ,Olabilir . (I chopped the rest)