On Wed, Sep 24, 2025 at 9:17 PM Bret Stern <[email protected]>
wrote:

> Couple things..I appear to be top posting. What is the preferred
> conversation rule. I use Thunderbird. Way back in the day, I seem to recall
> a setting
>
> which played to the bottom posting preference.
>
>
>
> On the conversation here. I've set a reverse proxy on my gateway apache
> server pointing to the backend apache server, which is running
>
> mail services. (It doesn't have to be that way, I'm just trying to keep
> server counts down.)
>
>
> On the backend apache server here is an example of my Virthost. However I
> think the following line should be "localhost"
>
> current -> ServerName postfixadmin.domain.com
>
> replace with something like ->
>
> *ProxyPass* /sample http://localhost:8080/sample*ProxyPassReverse* /sample 
> http://localhost:8080/sample
>
>
> <VirtualHost *:80>
>
>   ServerName postfixadmin.domain.com
>   DocumentRoot /var/www/postfixadmin/public/
>
>   ErrorLog /var/log/httpd/postfixadmin_error.log
>   CustomLog /var/log/httpd/postfixadmin_access.log combined
>
>   <Directory />
>     Options FollowSymLinks
>     AllowOverride All
>   </Directory>
>
>   <Directory /var/www/postfixadmin/public/>
>     Options FollowSymLinks MultiViews
>     AllowOverride All
>     Order allow,deny
>     allow from all
>   </Directory>
>
> </VirtualHost>
>
>
> I just don't think I get this yet, but very close. I have three reverse
> proxy conf that are working for websites.
>
>
> But this one simply says "File not found". The logs say
> error_log
> [Tue Sep 23 23:24:19.181827 2025] [proxy_fcgi:error] [pid 46973:tid 47081]
> [client 192.168.60.167:47784] AH01071: Got error 'Primary script unknown'
>
>
> access_log
> 192.168.60.167 - - [23/Sep/2025:23:24:19 -0700] "GET /setup.php HTTP/1.1"
> 404 16 "-" "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:141.0)
> Gecko/20100101 Firefox/141.0"
>
> Thanks for any help
>
> Bret
>
>
>
> On 9/20/2025 1:39 PM, Frank Gingras wrote:
>
>
>
> On Sat, Sep 20, 2025 at 3:46 PM Bret Stern <
> [email protected]> wrote:
>
>> Ok. Is there a recommended place for the TLS, or either one is fine. Just
>> confiming.
>>
>> Sounds like I'll need to remove a cert on one of the servers
>> thinking..Yes/No
>>
>> Thanks Frank.
>> On 9/20/2025 12:38 PM, Frank Gingras wrote:
>>
>>
>>
>> On Sat, Sep 20, 2025 at 3:12 PM Bret Stern <
>> [email protected]> wrote:
>>
>>> Hi there,
>>>
>>> I'm setting up and email server which is reverse proxyied behind a front
>>> end apache server.
>>>
>>>
>>> For the same domain...my dns has both a primary web server server, and
>>> an email server sitting behind a single wan ip.
>>>
>>> First question.
>>>
>>> Is this possible?
>>>
>>> At this point all email is working except smtp, which I'm thinking is a
>>> certificate problem.
>>>
>>>
>>> So I have certicates on the email server apache and the apache server
>>> providing the reverse proxy.
>>>
>>> And of course Postfix and Dovecot could have config issues, but mostly
>>> here I'm looking for verifying my described concept is
>>>
>>> achievable using apache.
>>>
>>>
>>> Comments or links to feasability and tips are always appreciated.
>>>
>>> Thanks,
>>>
>>> Bret
>>>
>>>
>>>
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>>>
>>>
>> Email and HTTP server had nothing to do with each other, practically.  A
>> reverse HTTP proxy can be used to host a webmail interface to handle those
>> emails, sure, but then just handle the TLS termination either on the edge,
>> or the inner server.
>>
>> For the latter, just use SSLProxyEngine on.
>>
>>
>>
> It depends on what the backend interface requires - if it redirects to
> https:// automatically, then you'll need to offload TLS to the proxied
> server with SSLProxyEngine on.
>
> Otherwise, you can handle the TLS handshake on the edge server and speak
> non-TLS to the inner servers.
>
> First, stop using the Allow/Deny/Order directives, and unload the
mod_access_compat module.

Secondly, Primary script unknown is the error caused by pointing the URI to
a non-existent resource running on php-fpm.  Take a look at
https://cwiki.apache.org/confluence/display/HTTPD/PHP-FPM

In short, if you request /foo a and you use DirectoryIndex index.php, the
request will be converted to /foo/index.php, which in turn will be proxied
to php-fpm, and that resource *must* existing on the file system, based on
the docroot set in your fpm pool.

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