how to mass delete after a hacked mail?

voytek at voytek at
Fri Sep 16 23:03:48 UTC 2016

I had a hacked user account resulting in several thousand bounces back to
that email inbox, account now corrected, but, how can I mass delete
bounces with say subject like:

"Undelivered Mail Returned to Sender"
(by from ? ""Mail Delivery System" <MAILER-DAEMON at>")

or what other ways to clean the mess ?



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