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Re: rewriting the domain on outbound mail

On Tue, Jun 13, 2000 at 05:11:28PM -0600, Devin Reade wrote:
> One of the zmailer installations that I maintain recently split off a
> new company and consequently now has a second domain.  Both companies 
> are using the same MTA and MDA, and the expected behavior is that for
> inbound traffic user1@originaldomain.com and user1@newdomain.com will
> go to the same mailbox.  Therefore, I just edited the localnames
> file thus:
> 	.originaldomain.com	originaldomain.com
> 	.newdomain.com		originaldomain.com
> 	originaldomain.com	originaldomain.com
> 	newdomain.com		originaldomain.com
> This gives the expected behavior, but a few days after making the change
> an interesting side effect was noticed.  It would appear that zmailer
> rewrites the "From:" header in outbound mail such that anyone trying
> to send mail as user@newdomain.com gets translated to
> user@originaldomain.com.  Is that intentional?  Without having
> reviewed the RFCs on the matter, I would contend that the "From:" header
> should *not* be so rewritten.

	Semi-intentional behaviour.

	If you change the right-hand side data for "*newdomain.com"
	keys to be "newdomain.com", then (naturally) it won't be
	translated to  "originaldomain.com"

> FWIW, if the user tries to send mail as user@elsewhere.com where
> elsewhere.com is not listed in the localnames file, no such rewriting
> occurs.
> Sparc Solaris 7 running zmailer 2.99.53-pre1.
> -- 
>         Devin Reade             gdr@gno.org

/Matti Aarnio	<mea@nic.funet.fi>