Mail Delivery Failure

[Mail Delivery System]

This message was created automatically by the mail system (ecelerity).

A message that you sent could not be delivered to one or more of its
recipients. This is a permanent error. The following address(es) failed:

>>> adamu.suleiman at ymail.com (reading confirmation): 554 delivery error: dd This user doesn't have a ymail.com account (adamu.suleiman at ymail.com) [0] - mta1620.mail.gq1.yahoo.com
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