email bouncing problem

have a new server. i set up the domain and mx record and dnsreport shows it as existing.

my problem is my outgoing mail (from a php comment script) is getting bounced by the recipient (which is also me). i think the problem (i included the error message below) is that my recieving server does not like my sender address "www@xxxxx.layeredtech.com". how do i change the sender address to reflect my domain name (or to anything that will work). currently, it reflects the hostname of my server provider. any ideas?


----- The following addresses had permanent fatal errors -----
<xxx@xxxxx.com>
(reason: 550-Verification failed for <www@xxxxx.layeredtech.com>)

----- Transcript of session follows -----
... while talking to xxxx.com.:
>>> DATA
<<< 550-Verification failed for <www@xxxx.layeredtech.com>
<<< 550-unrouteable mail domain "xxxx.layeredtech.com"
<<< 550 Sender verify failed
550 5.1.1 <xxxx@xxxx.com>... User unknown
<<< 503 valid RCPT command must precede DATA

 

 

 

 

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