On Wed, May 01, 2024 at 11:46:53PM +0100, Jeremy Harris via Exim-users wrote: > On 01/05/2024 22:42, The Doctor via Exim-users wrote: > > What is external forwarding? > > > > Sound like something scary. > > My *guess* is: > > You mailed person A. A has their mails configured, at the MX for A, > to be forwarded to B. You don't have control over that configuration; > it is entirely A's choice. He wanted it to be done. > > But you have configured your system, probably in "SPF" terms, you > say "any messages claiming to be from me *must* be be sent by *my* system. > Any messages being sent by any other system are invalid, and should be > rejected." > > The message is being sent onwards by A's MX to B's MX. it is being sent by > A's MX, as far as B's MX is concerned. > > B's MX implements SPF, and does what you claim you wanted. It rejects the > message, since the message did not arrive at that host directly from your MX. > > > > And thus, a traditional and useful feature of email handling has been broken.
Now that is totally assinine! > -- > Cheers, > Jeremy > > > -- > ## subscription configuration (requires account): > ## > https://lists.exim.org/mailman3/postorius/lists/exim-users.lists.exim.org/ > ## unsubscribe (doesn't require an account): > ## exim-users-unsubscr...@lists.exim.org > ## Exim details at http://www.exim.org/ > ## Please use the Wiki with this list - http://wiki.exim.org/ -- For effective Internet Etiquette and communications read http://catb.org/jargon/html/T/top-post.html, http://idallen.com/topposting.html & http://www.caliburn.nl/topposting.html -- ## subscription configuration (requires account): ## https://lists.exim.org/mailman3/postorius/lists/exim-users.lists.exim.org/ ## unsubscribe (doesn't require an account): ## exim-users-unsubscr...@lists.exim.org ## Exim details at http://www.exim.org/ ## Please use the Wiki with this list - http://wiki.exim.org/
