OK maybe I was unclear.
Of course I understand that.
I am talking about a site that I am authorative for. It's my own
domain. DNS points to this server.
2015-06-15 14:38 GMT+02:00 Viktor Dukhovni <postfix-us...@dukhovni.org>:
> On Mon, Jun 15, 2015 at 06:41:55AM +0200, Martin S wrote:
>
>> I might be extremely dense but what I don't understand now is:
>> The setup works if I am loged in to the system, e.g. by imap through
>> mail2web. Then I can send mail from my server to the world or between
>> mailboxes on the server.
>>
>> Sending mail to the server from the world outside results in 5.1.1
>> <xxxx@xxxx>: Recipient address rejected: User unknown in relay
>> recipient table.
>
> The specific domain you're sending mail to (one of your own domains
> when sending mail from outside, let's call it "example.com") is
> listed in the Postifx "relay_domains" configuration parameter:
>
> main.cf:
> relay_domains = ..., example.com, ...
>
> However the specific address you're sending mail to (say
> cu...@example.com) is not listed in any of the tables
> configured via "relay_recipient_maps":
>
> main.cf:
> indexed = ${default_database_type}:${config_directory}/
> relay_recipient_maps = ${indexed}relay-rcpts
>
> relay-rcpts:
> m...@example.com RELAY
> la...@example.com RELAY
> # BUT, no "cu...@example.com"
>
>> So looking up recipients only work ON the server but not from the
>> outside.
>
> Recipient validation is only applied to domains for which your
> server is "authoritative" (domains for which you accept inbound
> mail). Your server can't possibly know all the valid recipient
> addresses for other sites' domains (say gmail.com, yahoo.com, ...)
> and so delivers mail to these without lookups in relay_recipient_maps.
>
> See:
>
> http://www.postfix.org/BASIC_CONFIGURATION_README.html#mydestination
> http://www.postfix.org/BASIC_CONFIGURATION_README.html#relay_to
> http://www.postfix.org/ADDRESS_CLASS_README.html
>
> --
> Viktor.
--
Regards,
Martin S
