I sent an email to HTC today and the message was returned not one minute later with the following message attached:
The original message was received at Mon, 28 Nov 2011 22:03:57 -0500
from mtaomg-ma04.r1000.mx.aol.com [172.29.41.11]
*** 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 "<<<" describes the specific reason your e-mail could
not be delivered. The next line contains a second error message which is a
general translation for other e-mail servers.
Please direct further questions regarding this message to the e-mail
administrator or Postmaster at that destination.
--AOL Postmaster
----- The following addresses had permanent fatal errors -----
<support@hitechcreations.com>
(reason: 550 5.7.1 Access denied)
----- Transcript of session follows -----
... while talking to mx.hitechcreations.com.:
>>> MAIL From:<pannlouisiii@aol.com>
<<< 550 5.7.1 Access denied
554 5.0.0 Service unavailable
