Hi Sergio. Not sure what you were trying to accomplish with your ping, but since you asked.... it seems that your computer's (or perhaps your mail server's) system clock is fast. Thuis may have a bearing on any issues you are experiencing. I have the following headers from your original mail: Received: from dmz-mailsec-scanner-4.mit.edu (DMZ-MAILSEC-SCANNER-4.MIT.EDU [18.9.25.15]) by mailhub-dmz-4.mit.edu (8.13.8/8.9.2) with ESMTP id o6FCYCo0023142 for ; Thu, 15 Jul 2010 08:34:20 -0400 X-AuditID: 1209190f-b7bd9ae0000009fe-05-4c3f004b1a10 Received: from mail.allotrope.net (allotrope.net [82.70.139.137]) by dmz-mailsec-scanner-4.mit.edu (Symantec Brightmail Gateway) with SMTP id 75.2F.02558.B400F3C4; Thu, 15 Jul 2010 08:34:19 -0400 (EDT) Received: by mail.allotrope.net (Postfix, from userid 2002) id 0DFF347AFA; Thu, 15 Jul 2010 17:42:02 +0100 (BST) Received: from localhost (localhost [127.0.0.1]) by mail.allotrope.net (Postfix) with ESMTP id 0215B47A77 for ; Thu, 15 Jul 2010 17:42:01 +0100 (BST) Date: Thu, 15 Jul 2010 17:42:01 +0100 (BST) From: sergio masci To: "Microcontroller discussion list - Public." Subject: [OT] ping Now, the RFC2822 spec (section 3.3) indicates that: The time-of-day specifies the number of hours, minutes, and optionally seconds since midnight of the date indicated. The date and time-of-day SHOULD express local time. The zone specifies the offset from Coordinated Universal Time (UTC, formerly referred to as "Greenwich Mean Time") that the date and time-of-day represent. The "+" or "-" indicates whether the time-of-day is ahead of (i.e., east of) or behind (i.e., west of) Universal Time. The first two digits indicate the number of hours difference from Universal Time, and the last two digits indicate the number of minutes difference from Universal Time. (Hence, +hhmm means +(hh * 60 + mm) minutes, and -hhmm means -(hh * 60 + mm) minutes). The form "+0000" SHOULD be used to indicate a time zone at Universal Time. Though "-0000" also indicates Universal Time, it is used to indicate that the time was generated on a system that may be in a local time zone other than Universal Time and therefore indicates that the date-time contains no information about the local time zone. What this is telling me is that you sent the mail at: Thu, 15 Jul 2010 17:42:01 +0100 (BST) This is the same as Thu, 15 Jul 2010 16:42:01 +0000 (Universal time) Now, the piclist server, in Boston, I believe, received your mail at: Thu, 15 Jul 2010 08:34:19 -0400 (EDT) This is the same as Thu, 15 Jul 2010 12:34:19 +0000 (universal time) This tells me that your mail server's clock is a full 4 hours fast. 4 hours fast is a *lot*. Perhaps your problem lies in that. Rolf On Thu, 15 Jul 2010 17:42:01 +0100 (BST), sergio masci wrote: > ping > -- > http://www.piclist.com PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist