Tom Maier:
> The project description states that I have to implement some SMTP
> extension which provides two features. (1) The owner of an SMTP
> account should be able to upload personal information in the vCard
> format onto his mail account after authentication. (2) Everyone
> should be able to fetch the vCard from the mail server.
Postfix (or SMTP) supports neither uploading nor fetching, but that
has not stopped people from implementing that over SMTP. 25 Years
ago, people would set up all sorts of email aliases that would
deliver an email message to a local program that would respond with
a new email message.
Some of that functionality still exists today as part of mailing
list managers (for example, to retrieve archived list messages) and
"ftp over email" tools. All this can be implemented without having
to change any source code of Postfix (or of any competent MTA).
But, in in this day and age, setting up a web service might be
easier.
Wietse
