Here is a quick way to rename the .msf files to .msg.evil files and allow Thunderbird to rebuild the files, while preserving the damaged .msf files for further study.
find . -name '*.msf' -exec file "{}" \; -a -exec mv -v "{}" "{}".evil \;
Here is a quick way to rename the .msf files to .msg.evil files and allow Thunderbird to rebuild the files, while preserving the damaged .msf files for further study.
find . -name '*.msf' -exec file "{}" \; -a -exec mv -v "{}" "{}".evil \;