I am unable to respond to your email because my email addressed to you keeps coming back with the following message:

*** ATTENTION ***

Your e-mail is being returned to you because there was a problem with its
delivery. The address which was undeliverable is listed in the section
labeled: "----- The following addresses had permanent fatal errors -----".

The reason your mail is being returned to you is listed in the section
labeled: "----- Transcript of Session Follows -----".

The line beginning with "

----- Transcript of session follows -----
... while talking to air-xj03.mail.aol.com.:
>>> RCPT To:
... User unknown