Sent Email Blocked by AT&T

So I got a returned email when email sent to

   said: 553 5.3.0 flph386 DNSBL:ATTRBL 521<
_is_blocked.__For_information_see_ (in reply to MAIL
   FROM command)

When I did got to the site mentioned, it gave me these options of what configuration changes have my made since this happened:

Do I need to make any of these changes or just leave it empty and file a report?


AT&T is a pain. I don’t know. When this happens to me (a few times over many years) I just hope for the best.

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