Hello,

We use PGP based email encryption using the gateway and the customer uses tobit 
david as their mail server with S/MIME. Our public key is installed on their 
mail system.

When they reply to one of our emails we get it S/MIME encrypted, with their 
certificate attached. Email that aren't a reply to one of ours work fine.

The following is in djigzo.log (Personal information redacted):

25 Jul 2016 09:35:00 | INFO  incoming; MailID: 
9ccd7fb6-05db-4fe9-a683-50102d194a64; Recipients: [[email protected]]; 
Originator: [email protected]; Sender: [email protected]; Remote 
address: 1.2.3.4; Subject: Redacted; Message-ID: <[email protected]>;     
(mitm.application.djigzo.james.mailets.Log) [Spool Thread #2] 
25 Jul 2016 09:35:00 | INFO  Subject filter is disabled for the sender; MailID: 
9ccd7fb6-05db-4fe9-a683-50102d194a64; Recipients: [[email protected]]    
(mitm.application.djigzo.james.mailets.Default) [Spool Thread #2] 
25 Jul 2016 09:35:00 | INFO  To internal recipient(s); MailID: 
9ccd7fb6-05db-4fe9-a683-50102d194a64; Recipients: [[email protected]]    
(mitm.application.djigzo.james.mailets.Default) [Spool Thread #2] 
25 Jul 2016 09:35:00 | WARN  S/MIME decryption key not found; MailID: 
9ccd7fb6-05db-4fe9-a683-50102d194a64; Message: A suitable decryption key could 
not be found. CMS Recipients: Redacted    
(mitm.common.security.smime.handler.SMIMEHandler) [Spool Thread #2] 
25 Jul 2016 09:35:00 | INFO  Message handling is finished. Sending to final 
recipient(s); MailID: 9ccd7fb6-05db-4fe9-a683-50102d194a64; Recipients: 
[[email protected]]; Originator: [email protected]; Sender: 
[email protected]; Remote address: 1.2.3.4; Subject: Redacted; 
Message-ID: <[email protected]>;     
(mitm.application.djigzo.james.mailets.Log) [Spool Thread #0] 

Is there anything we can do on our side to fix this?

Regards,

mots

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