From: Daniel L'Hommedieu (dlhommedieugmail.com)
Date: Mon Jul 13 2009 - 10:32:08 CDT

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Begin forwarded message:
> On Jul 13, 2009, at 10:42, Victor Duchovni wrote:
>> On Mon, Jul 13, 2009 at 10:34:00AM -0400, Daniel L'Hommedieu wrote:
>>>> main.cf:
>>>> # Pick one:
>>>> #canonical_maps = hash:/etc/postfix/canonical
>>>> #virtual_alias_maps = hash:/etc/postfix/valias
>>>> #virtual_alias_domains = ... set me explicitly ...
>>>> #
>>>> #canonical_maps = cdb:/etc/postfix/canonical
>>>> #virtual_alias_maps = cdb:/etc/postfix/valias
>>>> #virtual_alias_domains = ... set me explicitly ...
>>>> #
>>>> #canonical_maps = ldap:/etc/postfix/canonical.cf
>>>> #virtual_alias_maps = ldap:/etc/postfix/valias.cf
>>>> #virtual_alias_domains = ... set me explicitly ...
>>>>
>>>> canonical:
>>>> oofrab.net foobar.edu
>>>>
>>>> valias:
>>>> foobar.edu oofrab.net
>>>>
>>>> The headers will read "foobar.edu", but the envelope recipient
>>>> for delivery (virtual(5) happens after canonical(5)) will still be
>>>> oofrab.net. There are other ways of doing this, but this one is
>>>> perhaps the most natural.
>>>
>>> Thanks Victor.
>>>
>>> FWIW I had tried the canonical map as you suggest (I thought I had
>>> mentioned that), but all that seemed to do was forward the mail
>>> back to the
>>> .edu address, which put the mail into a loop until I removed the
>>> map.
>>
>> Which is *exactly* why I add the virtual(5) reverse mapping, so that
>> the envelope recipient is "de-canonicalized". The procmail regexp
>> recipe
>> is fragile. Do as you see fit, but I recommend the canonical+virtual
>> approach.
>
> Hi Victor.
>
> I must be doing something wrong here, because it isn't working as I
> expect. Here's what I see happening:
> - email to non-groupwise-foobar.edu (on a server running sendmail)
> shows up on my system as being to both non-groupwise-foobar.edu AND oofrab.net
> .
> - email to groupwise-foobar.edu (my email address on the groupwise
> server, which started this whole mess) shows up as to oofrab.net.
>
> Based on your instructions, here is what I added to my main.cf:
> canonical_maps = hash:/etc/postfix/recipient_canonical
> virtual_alias_maps = hash:/etc/postfix/virtual_alias_maps
> virtual_alias_domains = bar.edu
>
> Here is my canonical map:
> oofrab.net foobar.edu
>
> Here is my virtual alias:
> foobar.edu oofrab.net
>
> For this test, I have disabled the procmail recipe.
>
> Any ideas on what I'm doing wrong?
>
> Thanks.
>
> Daniel

Well, one thing I note is that it is only correcting email that
originates locally. If I send mail to groupwise-foobar.edu and relay
through my postfix mail server, the mail ends up in the mailbox for oofrab.net
, correctly addressed "to" groupwise-foobar.edu. However, if I relay
through bar.edu's SMTP server, then the address is not getting set.
I'm sure that's a setting in main.cf and will start looking for that,
but wanted to give the additional info.

Thanks.

Daniel

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