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North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: ISP phishing
On Wed, 29 Jun 2005, Suresh Ramasubramanian wrote: On 29/06/05, william(at)elan.net <[email protected]> wrote:BTW - I happened to know person who has setup email forwarding for his department in major university in st.louis on sparc2 12 years ago. It is still working as far as I know! Last mail software update on it I believe was made 5 or 6 years ago when open relaying was disabled.We dont do sender rewriting / envelope rewriting for forwarded email, just pass it on We'll prepend Resent: headers though .. that should be enough And that would like be against what is specified in RFC2822 as in section 3.6.6 it says: ---------------------------------------------------------------------- Note: Reintroducing a message into the transport system and using resent fields is a different operation from "forwarding". "Forwarding" has two meanings: One sense of forwarding is that a mail reading program can be told by a user to forward a copy of a message to another person, making the forwarded message the body of the new message. A forwarded message in this sense does not appear to have come from the original sender, but is an entirely new message from the forwarder of the message. On the other hand, forwarding is also used to mean when a mail transport program gets a message and forwards it on to a different destination for final delivery. Resent header fields are not intended for use with either type of forwarding. ---------------------------------------------------------------------- You really should not be using Resent- unless this is done from MUA by direct manual action of the user - but use of Resent- by automated MTA process is not ok. The point is that there are many systems setup all over the world andBut well, we run linux and postfix, and a reasonably recent (non bleeding edge) version of both. We're not running on sendmail 8.8.8 or whatever your university department friend was running, I assure you people don't realize how many of those small intermediate systems are out there that are not running recent mail software. And because for forwarding systems setup many do not need to do more then relay to pre-defined address from aliases file or database, there is little need to to keep system updated to latest standards and this creates a very big problem as far as getting every forwarding system updated fast with something like SRS. -- William Leibzon Elan Networks [email protected]
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