[imp] Spam not reporting

[HiP-HiPpO]

  I have spam reporting enabled.  What I discovered is that messages  
sent through this method are not actually being submitted correctly.  
 I also found through manual testing, that the parameter '-C revoke'  
is not always successful.  So I changed the program line for spamc to  
use '-L spam' and '-L forget' respectively.  Here's how I tested.

In Horde and logged in as user1, find a message in Inbox to route  
through the Spam reporting process.  Select it and choose Other  
Options->View Source.  Copy all the source into a new file named  
email.eml on the mail server system.

Log into the mail server system as user1.
Using spamc, manually report the email as spam to the system to  
understand the intended behavior.
$ spamc -d localhost -L spam -s 1500000 -u user1 < email.eml

Responds with 
Message successfully un/learned

Run the same command a second time.
$ spamc -d localhost -L spam -s 1500000 -u user1 < email.eml

Responds with
Message was already un/learned

Remove the email from spamassassin with 
$ spamc -d localhost -L forget -s 1500000 -u user1 < email.eml

Responds with
Message successfully un/learned

Next, let's report the same email using Horde Spam Reporting then  
manually test that it was learned.  
In Horde, choose the same message from the Inbox and use the Spam  
reporting method.  Horde handles the spam reporting correctly and the  
messsage is moved to an alternative folder as intended.  This works  
fine.

Let's return to the email server system and manually check that the  
email was submitted correctly.

Rerun spamc with the email.eml file.  This should respond with a  
meesage that this was already learned.

$ spamc -d localhost -L spam -s 1500000 -u user1 < email.eml

Responds with 
Message successfully un/learned

It does NOT!  Instead this message has now been learned manually.  
 Horde did not report this correctly.

Here is my backends.local.php file for reference.

<?php
$servers['imap']['disabled'] = true;
$servers['advanced']['disabled'] = false;
$servers['advanced']['name'] = 'Advanced IMAP Server';
$servers['advanced']['hostspec'] = 'localhost';
$servers['advanced']['port'] = 143;
$servers['advanced']['maildomain'] = 'domain.net';
$servers['advanced']['spam']['innocent']['display'] = true;
$servers['advanced']['spam']['innocent']['program'] = '/usr/bin/spamc  
-s 1500000 -d localhost -L forget -u %l';
$servers['advanced']['spam']['spam']['display'] = true;
$servers['advanced']['spam']['spam']['program'] = '/usr/bin/spamc -s  
1500000 -d localhost -L spam -u %l';
$servers['advanced']['special_mboxes']['IMP_Mailbox::MBOX_DRAFTS'] = 'Drafts';
$servers['advanced']['special_mboxes']['IMP_Mailbox::MBOX_SENT'] = 'Sent';
$servers['advanced']['special_mboxes']['IMP_Mailbox::MBOX_SPAM'] = 'Spam';
$servers['advanced']['special_mboxes']['IMP_Mailbox::MBOX_TEMPLATES']  
= 'Templates';
$servers['advanced']['special_mboxes']['IMP_Mailbox::MBOX_TRASH'] = 'Trash';
$servers['advanced']['autocreate_special'] = true;

Looking at the apache status, it does show that spamc process was  
kicked off, but it does not appear that any intended email files are  
actually being submitted, unless this is just how the log lines appear.

# /etc/init.d/apache2 status 
  ● apache2.service - LSB: Apache2 web server
     Loaded: loaded (/etc/init.d/apache2)
    Drop-In: /lib/systemd/system/apache2.service.d
             └─forking.conf
     Active: active (running) since Thu 2016-12-22 01:54:09 PST; 5 days ago
    Process: 25714 ExecStop=/etc/init.d/apache2 stop (code=exited,  
status=0/SUCCESS)
    Process: 24796 ExecReload=/etc/init.d/apache2 reload (code=exited,  
status=0/SUCCESS)
    Process: 25739 ExecStart=/etc/init.d/apache2 start (code=exited,  
status=0/SUCCESS)
     CGroup: /system.slice/apache2.service
             ├─  417 /usr/sbin/apache2 -k start
             ├─  431 /usr/sbin/apache2 -k start
             ├─  432 /usr/sbin/apache2 -k start
             ├─  448 /usr/sbin/apache2 -k start
             ├─  449 /usr/sbin/apache2 -k start
             ├─  452 /usr/sbin/apache2 -k start
             ├─  454 /usr/sbin/apache2 -k start
             ├─25018 /usr/sbin/apache2 -k start
             ├─25753 /usr/sbin/apache2 -k start
             ├─25757 /usr/sbin/apache2 -k start
             ├─25758 /usr/sbin/apache2 -k start
             ├─25843 /usr/sbin/apache2 -k start
             ├─25846 /usr/sbin/apache2 -k start
             ├─25847 /usr/sbin/apache2 -k start
             ├─26512 /usr/sbin/apache2 -k start
             ├─27332 /usr/sbin/apache2 -k start
             ├─27334 /usr/sbin/apache2 -k start
             ├─27403 sh -c /usr/bin/spamc -s 1500000 -d localhost -L  
spam -u 'user1'
             ├─27404 /usr/bin/spamc -s 1500000 -d localhost -L spam -u user1
             ├─28056 /usr/sbin/apache2 -k start
             ├─31845 /usr/sbin/apache2 -k start
             ├─31987 /usr/sbin/apache2 -k start
             └─32190 /usr/sbin/apache2 -k start