That's exactly what's happening.

 
 
-----Ursprüngliche Nachricht-----
> Von:Martijn Brinkers <mart...@ciphermail.com>
> Gesendet: Don 28 Juli 2016 23:31
> An: users@lists.djigzo.com
> Betreff: Re: [Djigzo users] External mail system replis with S/MIME encrypted 
> responses to our pgp signed mail.
> 
> On 07/28/2016 05:04 PM, mots wrote:
> > 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.
> 
> Not sure whether I fully understand the problem.
> 
> So if you send a message signed with PGP/MIME and the recipient replies,
> the reply is S/MIME encrypted with a certificate for which you do not
> have the private key? But if they send you a message which is not a
> reply, the message is not encrypted?
> 
> Kind regards,
> 
> Martijn Brinkers
> 
> 
> > 
> > The following is in djigzo.log (Personal information redacted):
> > 
> > 25 Jul 2016 09:35:00 | INFO  incoming; MailID:
> > 9ccd7fb6-05db-4fe9-a683-50102d194a64; Recipients:
> > [local_u...@company.com]; Originator: remote_u...@customer.com;
> > Sender: remote_u...@customer.com; Remote address: 1.2.3.4; Subject:
> > Redacted; Message-ID: <someth...@isp.com>;
> > (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:
> > [local_u...@company.com]
> > (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:
> > [local_u...@company.com]
> > (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: [local_u...@company.com]; Originator:
> > remote_u...@customer.com; Sender: remote_u...@customer.com; Remote
> > address: 1.2.3.4; Subject: Redacted; Message-ID: <someth...@isp.com>;
> > (mitm.application.djigzo.james.mailets.Log) [Spool Thread #0]
> > 
> > Is there anything we can do on our side to fix this?
> > 
> > Regards,
> > 
> > mots
> > 
> > 
> > 
> > _______________________________________________ Users mailing list 
> > Users@lists.djigzo.com https://lists.djigzo.com/lists/listinfo/users
> > 
> 
> 
> -- 
> CipherMail email encryption
> 
> Email encryption with support for S/MIME, OpenPGP, PDF encryption and
> secure webmail pull.
> 
> https://www.ciphermail.com
> 
> Twitter: http://twitter.com/CipherMail
> 
> -- 
> CipherMail email encryption
> 
> Email encryption with support for S/MIME, OpenPGP, PDF encryption and
> secure webmail pull.
> 
> https://www.ciphermail.com
> 
> Twitter: http://twitter.com/CipherMail
> _______________________________________________
> Users mailing list
> Users@lists.djigzo.com
> https://lists.djigzo.com/lists/listinfo/users
> 

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