Massage SQL table with email messages to detect/repair broken MIME text

I have a MSSQL table with 30K records containing email messages. All of these records were gleaned from an Exchange server, so the headers and MIME text fields have been separated. Some older records were gleaned improperly, so reconstructing the original MIME message is difficult (for example, CRLFs were removed.) I need someone knowledgeable in MIME and SQL to ascertain the records that are in the correct format, try to identify and recover those that have been mangled. In the end, the status of each record should be stored in a new field in the table. (i.e. OK, recovered, not recoverable.) Please, I'm only interested in hearing from those with serious SQL and MIME experience.