[Closed] email forward for dynamic receipts

We would like to forward all the emails coming to messages+string@reply.domain.com to messages+string@anotherdomain.com where string is a random string. Is it possible using the dyn email forward service ? Basically the receipt will be a single one but as you can see there is the random string which is "random". Currently I set a CNAME on reply.domain.com to point at anotherdomain.com but seems the emails are not being forwarded for some reasons.