Requeuing failed (failure) messages for another delivery attempt

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http://forums.cpanel.net – Due to a configuration issue (related to Amazon SES) we have 300 or so emails which have failed to be delivered over the last 2 days. They are no longer in the mail queue and are listed as failed (failure). The configuration issue has been resolved now and we would like to somehow push/move these failed messages back to the mail queue so delivery can be reattempted (and it'll succeed now). Is this possible? I've done some searching on here and exim.org and haven't found any answers although it looks like a number of people have asked. (HowTos)