Bugtraq mailing list archives
Re: Microsoft Outlook (Express) bug..
From: fred () CHEETAHMAIL COM (Frederik Lindberg)
Date: Sun, 11 Jun 2000 13:07:51 -0500
On Fri, 9 Jun 2000 21:57:16 -0700, Elias Levy wrote:
Travis Ogdon <togdon () easystreet com>: This is also true for all messages with the following invalid headers: Return-Path: <>
This is a valid header for [double-]bounces, added at the time of final delivery, in this case the POP3/IMAP server when the envelope sender is NULL. See rfc1123: 5.2.13 RFC-822 Message Specification: RFC-822 Section 4 The syntax shown for the Return-path line omits the possibility of a null return path, which is used to prevent looping of error notifications (see Section 5.3.3). The complete syntax is: return = "Return-path" ":" route-addr / "Return-path" ":" "<" ">" The set of optional header fields is hereby expanded to include the Content-Type field defined in RFC-1049 [SMTP:7]. This field "allows mail reading systems to automatically identify the type of a structured message body and to process it for display accordingly". [SMTP:7] A User Agent MAY support this field. -- Fred Frederik Lindberg, CTO, CheetahMail
Current thread:
- Microsoft Outlook (Express) bug.. Matthew J. Brown (Jun 05)
- <Possible follow-ups>
- Re: Microsoft Outlook (Express) bug.. Elias Levy (Jun 09)
- Re: Microsoft Outlook (Express) bug.. Frederik Lindberg (Jun 11)