NAME RT::Extension::CustomizeContentType - Customize Attachments' ContentType INSTALLATION perl Makefile.PL make make install May need root permissions Edit your /opt/rt4/etc/RT_SiteConfig.pm If you are using RT 4.2 or greater, add this line: Plugin('RT::Extension::CustomizeContentType'); For RT 4.0, add this line: Set(@Plugins, qw(RT::Extension::CustomizeContentType)); or add RT::Extension::CustomizeContentType to your existing @Plugins line. Clear your mason cache rm -rf /opt/rt4/var/mason_data/obj Restart your webserver CONFIGURATION Set the %ContentTypes configuration variable to a hash of extension and desired content-type: Set( %ContentTypes, ( 't' => 'text/x-perl-script', 'psgi' => 'text/x-perl-script', ) ); Microsoft Office Older versions of IE often upload newer Microsoft Office documents with the generic application/octet-stream MIME type instead of something more appropriate. This causes RT to offer the file for download using the generic content type, which confuses users and doesn't launch Office for them. You can fix that by installing this extension and using the configuration below: Set(%ContentTypes, 'docm' => 'application/vnd.ms-word.document.macroEnabled.12', 'docx' => 'application/vnd.openxmlformats-officedocument.wordprocessingml.document', 'dotm' => 'application/vnd.ms-word.template.macroEnabled.12', 'dotx' => 'application/vnd.openxmlformats-officedocument.wordprocessingml.template', 'potm' => 'application/vnd.ms-powerpoint.template.macroEnabled.12', 'potx' => 'application/vnd.openxmlformats-officedocument.presentationml.template', 'ppam' => 'application/vnd.ms-powerpoint.addin.macroEnabled.12', 'ppsm' => 'application/vnd.ms-powerpoint.slideshow.macroEnabled.12', 'ppsx' => 'application/vnd.openxmlformats-officedocument.presentationml.slideshow', 'pptm' => 'application/vnd.ms-powerpoint.presentation.macroEnabled.12', 'pptx' => 'application/vnd.openxmlformats-officedocument.presentationml.presentation', 'xlam' => 'application/vnd.ms-excel.addin.macroEnabled.12', 'xlsb' => 'application/vnd.ms-excel.sheet.binary.macroEnabled.12', 'xlsm' => 'application/vnd.ms-excel.sheet.macroEnabled.12', 'xlsx' => 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet', 'xltm' => 'application/vnd.ms-excel.template.macroEnabled.12', 'xltx' => 'application/vnd.openxmlformats-officedocument.spreadsheetml.template', ); Config contributed by Nathan March. AUTHOR Best Practical Solutions, LLC BUGS All bugs should be reported via email to L or via the web at L. LICENSE AND COPYRIGHT This software is Copyright (c) 2014 by Best Practical Solutions This is free software, licensed under: The GNU General Public License, Version 2, June 1991