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: [xxxxx(a)xxxx.com]; Originator: yyyy(a)yyyyy.com; Sender: yyyy(a)yyyyyy.com; Remote address: 217.72.192.zz; Subject: Re: Hurra; Message-ID: <56559D7E.6000204(a)yyyyy.com>om>; (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: [xxxx(a)xxxx.com] (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: [xxxxx(a)xxxx.com] (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: [xxxxx(a)xxxx.com] (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: [xxxxx(a)xxxxx.com]; Originator: yyyyy(a)yyyy.com; Sender:yyyy@yyyyy.com; Remote address: 217.72.192.zz; Subject: Re: Hurra; Message-ID: <56559D7E.6000204(a)yyyyyy.com>om>; (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: [xxxx(a)xxxxx.com] (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