Chris.Knadle at coredump
Jul 15, 2012, 2:17 PM
Post #3 of 5
On Sunday, July 15, 2012 07:14:34, Michael J. Tubby B.Sc G8TIC wrote:
Re: Rewriting Reply-To header to match From Address??
[In reply to]
> Rather than re-write the Reply-To: header why not just strip it off? The
> Reply-To header is used in preference to the From: for the return
> address, if it exists - but there's no requirement for it - AFAIK.
It may not be a requirement, but stripping the Reply-To: header is likely make
it more difficult for users to deal with mailing lists, because I think a
Reply will default to being sent to the author rather than the mailing list.
Chris.Knadle [at] coredump
> On 14/07/2012 21:54, Kevin wrote:
> > Looking into rewritting the Reply-To header...
> > Some info first:
> > We have a gateway server which does all the Internet mail transfers both
> > in and out. It has a number of domains it provides mail services for.
> > On some of the domains, the email is forwarded to specific user accounts
> > to an Inside mail server using the that mail servers hostname and the
> > specific userid for that mailbox on that server (not always the same as
> > the inbound local part for that user using their domain).
> > So, lets say we have a user name fred with an Internet Email address of:
> > fred [at] got-here
> > Email arrives and gets queued for the inside mail server for
> > fred123 [at] inside
> > Everything is cool... The user gets the email using whatever protocol
> > they use and when they send email, it authenticates with the inside mail
> > server with that same address, and sets in the email their Internet
> > email address ( fred [at] got-here in this case).
> > When it gets to the outside mail server it looks like:
> > Reply-To: fred123 [at] inside
> > From: fred [at] got-here
> > However, once the message leaves the outside mail server, the Reply-To
> > header is bogus since there is no Internet known host called
> > inside.zipturtle.com so it would never get back to the gateway server
> > should it have to go several hops.
> > All of the examples that I see of rewriting deal with the same domain.
> > In this case the inside and gateway server using a completely different
> > domain than the email address involved. The From address is correct,
> > but the Reply-To headers make no sense after the email leaves the mail
> > gateway.
> > Hope this makes sense.
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