[pfx] Re: user unknown in local recipient table

Fri, 19 Dec 2025 07:22:25 -0800 

Hi Viktor,

See embedded comments.

On 12/18/2025 8:12 PM, Viktor Dukhovni via Postfix-users wrote:

On Thu, Dec 18, 2025 at 11:25:07AM -0500, Dennis Putnam via Postfix-users wrote:


<cufsalumni@localhost>: Recipient address rejected: User unknown in local
recipient table

That's the *local* recipient table, not the *relay* recipient table.
Seehttps://www.postfix.org/ADDRESS_CLASS_README.html


I don't understand why. In my main.cf I have:

Because:

     - The "localhost" domain is the "local" address class, i.e.
       is listed in $mydestination.

     - The "cufsalumni" user is not listed in $local_recipient_table

But indeed it is. My local_recipient_maps contains cufsalumni@localhost



relay_domains = hash:/opt/mailman/mm/var/data/postfix_domains

Which domains are "relay" domains is not relevant.


gmail.com gmail.com

You **REALLY** DO NOT want to be a open relay for "gmail.com", any
spammer who figures out that's the case will abuse your system to
relay spam to GMail, until you're blocked by Google.
I'm not. I use fetchmail to retrieve email from certain accounts. That gets fed to mailman which rejects mail from non-members. 


localhost localhost

This is a bad idea, because that is also (as it typically should be)
listed in $mydestination, which takes precedence.
It is in $mydestination, I added this to try to get things working. I will remove it. 


I did run postmap on that file. What am I missing? TIA.

Pretty much everything, you'll need to spend some time understanding
the content of ADDRESS_CLASS_README.  Perhaps with the aid of Ralf's
and Patrick's book.

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