[pfx] Re: From/Reply-To munging (was Postfix in containers/kubernetes)

[Danjel Jungersen via Postfix-users]

On 23 October 2024 22:29:58 CEST, John Stoffel via Postfix-users 
<postfix-users@postfix.org> wrote:
>>>>>> "Wietse" == Wietse Venema via Postfix-users <postfix-users@postfix.org> 
>>>>>> writes:
>
>> John Stoffel:
>>> >>>>> "Wietse" == Wietse Venema via Postfix-users 
>>> >>>>> <postfix-users@postfix.org> writes:
>>> 
>>> > Postfix lists are run by Mailman3, configured to replace the From:
>>> > addres with the list address; Mailman3 then unconditionally adds
>>> > the original From: addres to Reply-to:. This is standard Mailman
>>> > damage control for DMARC.
>>> 
>>> Is there any simple way to do this for a regular postfix setup where I
>>> need to forward some emails to a gmail.com or other account?  
>
>> It may be possible with a Milter in the mail receiving path. Sort-of
>> the opposite of what I described for undoig DMARC.
>
>> Otherwise, 'forward as an attachment' is a common mail reader
>> feature.
>
>Sorry, I wasn't clear in my ask.  I have some virtual user emails
>which I simply forward off to their @gmail.com accounts.  And they're
>starting to bounce a bit more.  
>
>Been working to get DKIM on my side working, but something is broken
>there and I need to spend some time tracking down the issue.
>
>main.cf:
>
>  virtual_alias_maps = hash:/etc/postfix/virtual-alias-maps
>
>virtual-alias-maps:
>
>  f...@stoffel.org:  b...@gmail.com
>
>
>I'd like to re-write emails to @gmail.com to update the header.  But
>maybe first I need to get DKIM working properly.  

I managed to set up a working dkim from this help:
<https://workaround.org/ispmail-bookworm/prevent-spoofing-using-dkim/>


>
>
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