Hi,

we have setup a PGP encryption between one of our customers (using ciphermail) 
and his tax accountant (using enigmail).

The tax accountant has to send loan reports only as an encrypted email. 
We exported the public pgp key of the customer and imported it successfully 
into enigmail. Did the same with my public key.
The public key of the customer has been in use in our ciphermail installation 
for at least 4 months.

When the tax accountant sends an email to my address it is encrypted and 
decrypted.
When the tax account sends an email to the customer  it is encrypted but not 
decrypted:

25 Nov 2015 12:37:53 | INFO  incoming; MailID: 
d958dba2-9d26-41d7-bbff-26f54c10d5bd; Recipients: [[email protected]]; Originator: 
[email protected]; Sender: [email protected]; Remote address: 217.72.192.zz; 
Subject: Re: Hurra; Message-ID: <[email protected]>;     
(mitm.application.djigzo.james.mailets.Log) [Spool Thread #2] 
25 Nov 2015 12:37:53 | INFO  Subject filter is disabled for the sender; MailID: 
d958dba2-9d26-41d7-bbff-26f54c10d5bd; Recipients: [[email protected]]    
(mitm.application.djigzo.james.mailets.Default) [Spool Thread #2] 
25 Nov 2015 12:37:53 | INFO  To internal recipient(s); MailID: 
d958dba2-9d26-41d7-bbff-26f54c10d5bd; Recipients: [[email protected]]    
(mitm.application.djigzo.james.mailets.Default) [Spool Thread #2] 
25 Nov 2015 12:37:53 | INFO  "add security info" is enabled for the 
recipient(s); MailID: d958dba2-9d26-41d7-bbff-26f54c10d5bd; Recipients: 
[[email protected]]    (mitm.application.djigzo.james.mailets.Default) [Spool 
Thread #2] 
25 Nov 2015 12:37:54 | INFO  Message handling is finished. Sending to final 
recipient(s); MailID: d958dba2-9d26-41d7-bbff-26f54c10d5bd; Recipients: 
[[email protected]]; Originator: [email protected]; Sender:[email protected]; Remote 
address: 217.72.192.zz; Subject: Re: Hurra; Message-ID: 
<[email protected]>;     (mitm.application.djigzo.james.mailets.Log) 
[Spool Thread #2] 

I have access to the customers emails and I see the encrypted email.

When I send an encrypted email to the customer, the log contains the line 

25 Nov 2015 13:21:09 | INFO  Message has been PGP decrypted; MailID: 
9a6a2080-8a10-4aff-9370-3fab14845438; Recipients: [[email protected]]    
(mitm.application.djigzo.james.mailets.PGPHandler) [Spool Thread #1] 

There is one difference between the two ciphermail installations: Our customer 
has a user profile for the tax accountant, we do not. I therefore assume, that 
I made a mistake in the configuration of that profile. But which parameter 
could prevent an email from beeing decrytped? Why does one ciphermail 
installation recognize the encryption and the other one not?

Thanks for your help,

Stefan

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