On Wed, 2009-01-21 at 13:06 -0500, Ben Scott wrote:
> At least one person is confused here (me); possibly everybody. :-)
>
> The scenario here (for me, and I believe the OP) is rewriting email
> addresses, not masquerading as a different host.
>
> Two have people suggested a config directive for Postfix:
>
> myhostname = foo.example.com
>
> Now, I don't know Postfix, but I'm guessing that sets the hostname.
> :) Since confusion over hostname and reverse-path was seen earlier,
> and is being seen here, I am going to spell things out step-by-step,
> in the hope of establishing mutual understanding. :)
I've got:
myorigin = venix.com
The commented section of main.cf:
# SENDING MAIL
#
# The myorigin parameter specifies the domain that locally-posted
# mail appears to come from. The default is to append $myhostname,
# which is fine for small sites. If you run a domain with multiple
# machines, you should (1) change this to $mydomain and (2) set up
# a domain-wide alias database that aliases each user to
# u...@that.users.mailhost.
#
# For the sake of consistency between sender and recipient addresses,
# myorigin also specifies the default domain name that is appended
# to recipient addresses that have no @domain part.
#
#myorigin = $myhostname
#myorigin = $mydomain
myorigin = venix.com
Obviously you will want a different domain than venix.com.
>
(snipped)
> Example: My PC's hostname is <blackfire>. I've got an /etc/hosts
> entry that will cause that to canonicalizize to
> <blackfire.local.bscott>. So when my MTA (Sendmail) talks to Comcast,
> it HELO's as <blackfire.local.bscott>.
>
> My user account is <bscott>. By default, my MTA would build my
> email address as <bsc...@blackfire.local.bscott>. That's obviously
> invalid outside my LAN.
>
> My public email address right now is <dragonh...@gmail.com>.
> Changing my MTA's idea of my hostname to <gmail.com> would yield
> <bsc...@gmail.com>, which doesn't help.
>
> I could rename my account. But then if I wanted to switch to my
> Comcast address (which is <bscott...@comcast.net>), I'd have to change
> everything again. If I get my vanity domain working again, I'd have
> to rename my local account to "public", so my default email address
> would be <pub...@dragonhawk.org>. My account name is used in config
> files all over my PCs; this would be a mess.
>
> So, what I want to do is tell my MTA to rewrite <bscott> and some
> variants to <dragonh...@gmail.com>. My MTA can keep on using
> <blackfire.local.bscott> for its hostname, but I want it to modify the
> reverse-path.
>
> Do do that, I add an entry to the Sendmail /etc/mail/genericstable,
> which looks like this:
>
> bscott dragonh...@gmail.com
>
> For a hypothetical other user on my PC, I could add:
>
> bobama presid...@whitehouse.gov
>
Using myorigin is too simplistic for your example. It would simply
rewrite bscott to bsc...@venix.com
> The scenario here (for me, and the OP) is rewriting email addresses,
> not masquerading as a different host. :)
>
> So, {can, how would} this be done in Postfix and/or Exim?
>
> -- Ben
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--
Lloyd Kvam
Venix Corp
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