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postfix-users: Re: adding digital signature to email?

Re: adding digital signature to email?

From: <lst_hoe02_at_nospam>
Date: Wed Oct 27 2010 - 12:08:30 GMT

Zitat von Tomasz Chmielewski <>:

> Is it somehow possible to make Postfix add a digital signature to
> outgoing emails?
> Most likely Postfix itself can't do it, but maybe there is some
> filter (similar to amavis, or dkimproxy) which can be used with
> Postfix, which lets digitally sign email (i.e. if From: is X1, sign
> with key K1)?

If you intend to use digital signatures according to X509 PKI have a
look at We use
Djigzo and it is works as expected with many useful features like
policy based signing/encryption and the like.