> 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). Do you have any sources (e.g., project names) about that? I would like to read more about those approaches.
Within my uni project I have to implement additional SMTP commands in order to upload or download data (e.g., base64 encoded data). This is why my initial idea was to add functionality to the smtpd server of Postfix by defining a SMTP service extension. Thus it would be possible to provide the "upload" command only for previously authenticated users. As opposed to this the "download" command is available for everyone. What do you think about this concept? > But, in in this day and age, setting up a web service might be > easier. Unfortunately the task is very specific about this. I have to implement the mentioned features by implementing additional FTP commands. -- Tom Maier Landsberger Straße 272 80687 Munich Germany
