OpenPGP and usability

Simon Josefsson simon at
Fri Aug 10 21:15:10 CEST 2007

"Steven E. Harris" <seh at> writes:

> Werner Koch <wk at> writes:
>> Well, the X prefix is not anymore required for user defined headers.
> Was there some change in this prescription? If so, from where? I hadn't
> heard about "X-" falling from use.

In RFC 822 there was X-, in RFC 2822 it has been removed.  X-* is a bad
idea: once you want to standardize an experimental header, you have to
break the deployment of that header.


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