The various options are:
a) allow users to attach postscript files, these will not appear in the saved pdf version, but
would be printed separately in the version sent to the TAG
b) Not allow postscript attachments (pdf, jpeg, gif etc are all ok)
c) Connect to a central server each time Save As pdf is requested.
The server will run the required software to convert the postscript into pdf.
For UKGSG b) or c) would be the easiest option, but c) requires additional connectivity. Would banning postscript attachments cause problems for anybody ?