It seems to me that it is probably someone using the address at atrinc@7 which is causing the bounce. Somehow this is getting directed to covadmail.net which knows nothing about it. I may be wrong, but just working my way back up the headers, this is the one I cannot understand. P.S. I posted a message to the piclist yesterday with a header in it, and it just seemed to disappear into the ether :)) *********** start of bounced header ******** Content-Type: message/rfc822 Return-Path: Received: from MITVMA (NJE origin SMTP@MITVMA) by MITVMA.MIT.EDU (LMail V1.2d/1.8d) with BSMTP id 9459; Wed, 21 May 2003 04:57:49 -0400 Received: from mx01.covadmail.net [63.65.120.61] by mitvma.mit.edu (IBM VM SMTP Level 320) via TCP with SMTP ; Wed, 21 May 2003 04:57:48 EDT X-Warning: mitvma.mit.edu: Host mx01.covadmail.net claimed to be smtp.covadmail.net Received: (covad.net 31400 invoked from network); 21 May 2003 08:58:07 -0000 Received: from unknown (HELO atr.atrmain.local) (68.164.99.170) by sun-qmail09 with SMTP; 21 May 2003 08:58:06 -0000 Received: from atr.atrmain.local ([192.168.123.71]) by atr.atrmain.local with Microsoft SMTPSVC(5.0.2195.5329); Wed, 21 May 2003 05:00:31 -0400 Received: by atr.atrmain.local (Microsoft Connector for POP3 Mailboxes 5.00.2195) with SMTP (Global POP3 Download) id MSG05212003-050030-7072.MMD@atrbiotech.com; Wed, 21 May 2003 05:00:30 -0400 Return-Path: Delivered-To: atrinc@7 Received: (covad.net 2540 invoked from network); 21 May 2003 08:47:14 -0000 Received: from unknown (HELO cherry.ease.lsoft.com) (209.119.0.109) by sun-qmail01 with SMTP; 21 May 2003 08:47:14 -0000 Received: from PEAR.EASE.LSOFT.COM (209.119.0.19) by cherry.ease.lsoft.com (LSMTP for Digital Unix v1.1b) with SMTP id <9.009D9483@cherry.ease.lsoft.com>; Wed, 21 May 2003 4:47:12 -0400 Received: from MITVMA.MIT.EDU by MITVMA.MIT.EDU (LISTSERV-TCP/IP release 1.8e) with spool id 3918 for PICLIST@MITVMA.MIT.EDU; Wed, 21 May 2003 04:25:27 -0400 Received: from MITVMA (NJE origin SMTP@MITVMA) by MITVMA.MIT.EDU (LMail V1.2d/1.8d) with BSMTP id 8923; Wed, 21 May 2003 04:24:26 -0400 Received: from nori.rl.ac.uk [130.246.135.154] by mitvma.mit.edu (IBM VM SMTP Level 320) via TCP with ESMTP ; Wed, 21 May 2003 04:24:25 EDT X-Comment: mitvma.mit.edu: Mail was sent by nori.rl.ac.uk X-RAL-MFrom: X-RAL-Connect: Received: from sstdwkiwi (sstdwkiwi.ag.rl.ac.uk [130.246.189.231]) by nori.rl.ac.uk (8.11.1/8.11.1) with SMTP id h4L8OhB02482 for ; Wed, 21 May 2003 09:24:43 +0100 -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu