That wasn’t the question he asked. He asked how to remove the mailbox recipient/sender information from message files in an Exchange system. That’s a bit more complicated, esp. if you don’t want to leave a forensic trace.
Based on this email, it seems they were trying to obfuscate Hillary’s address to make it impossible to determine if Hillary herself sent/received the emails. Instead, they chose to wipe the server to make it impossible to recover the data.
Problem with all of this is that the Russians and Chinese had the data long before any scrubbing was done.
They were foolish if they thought “wiping the server” was really a solution.
But, if I wanted to go down that road, I would remove the HDD, smash it a few times with a hammer, stick it in a bag of bad garbage, drive 30 miles to a random 7-11, and throw the bag in a dumpster.
It would never be found and/or examined closely.
Not a real solution, since the Russians, the Chinese and the NSA would have copies, but still seems better than “wiping it with a cloth”.
This fits perfectly with Career Criminal Clinton’s frame of mind - her greedy sense was to try to hide it so she could keep it (her archives). Only once it was determined that they wouldn’t be able to secret the data did they choose to destroy it.