On 07/02/2014 05:25 PM, Stefan Michael Guenther wrote: > Hello Martijn, > > one of our clients receives encrypted emails with a single small text > attachment, send by some specialized appliance. > > The problem is, that after decryption, the attachment seems to have > disappeared. Since the attachment only contains one or two lines of > text, it isn't helpful to compare the size of the email before and > after decryption. > > Which loggers do I have to switch to debug to see, what happens to > the attachment? > > Since there is a large number of other emails with attachments, which > are decrypted correctly, I doubt that it is a Djigzo problem. But at > least we have to proof it.
For the record, since it might help someone else having a similar problem, it turned out that the message was correctly decrypted however, the resulting message was opaquely signed. An opaquely signed message can only be read with an S/MIME aware application (a clear signed message can be read like a normal email). Since the mail application that had to extract the attachment was not capable of reading S/MIME opaque signed email, it did not detect the attachment. The solution was to have the gateway remove the digital signature by checking the advanced S/MIME setting "Remove signature". The will remove the S/MIME signature which then results in a normal email with the attachment. Kind regards, Martijn Brinkers -- CipherMail email encryption Open source email encryption gateway with support for S/MIME, OpenPGP and PDF messaging. http://www.ciphermail.com Twitter: http://twitter.com/CipherMail _______________________________________________ Users mailing list [email protected] https://lists.djigzo.com/lists/listinfo/users
