Just got this message after trying to e-mail back a customer who e-mailed me.  I know she didn't block me as we have been e-mailing back and forth for weeks.  Does this have to do with the recent migration?  Please help...

PLEASE READ THE ENTIRE EMAIL TO RESOLVE YOUR ISSUE

This address is only for issues where EarthLink appears to be  blocking a mail
server and mail is returned with the the following  error messages: "550
Dynamic/zombied/spam IPs blocked. Write  blockedbyearthlink@abuse.earthlink.net."

EarthLink may be blocking your mail server because the server is  listed in a
dynamic IP range, is listed as an open proxy, is listed  as a compromised machine,
or is major source of spam.

In order to help you with your issue we will need some information  from you.  If
you are the administrator of this mail server, please  follow the instructions below
before emailing us back.

If you do not know what IP address your server is sending with,  please contact the
mail administrator of your company or your ISP and  have them follow the
instructions below.

If you are the administrator of the email server being blocked,  please know you may
be able to expedite unblocking by checking to see  if your mail server is listed in
the following lists and resolving  before emailing us:

http://cbl.abuseat.org/lookup.cgi
Info from their site states: "What is the CBL?  The CBL takes its  source data from
very large spamtraps/mail infrastructures, and only  lists IPs exhibiting
characteristics which are specific to open  proxies of various sorts (HTTP, socks,
AnalogX, wingate etc) which  have been abused to send spam, worms/viruses that do
their own direct  mail transmission, or some types of trojan-horse or "stealth"
spamware, without doing open proxy tests of any kind.  In other  words, the CBL only
lists IPs that have attempted to send email to  one of our servers in such a way as
to indicate that the sending IP  is infected."  EarthLink blocks mail from all known
proxies/zombies  because they are major sources of spam.

http://www.spamhaus.org/sbl/index.lasso
Info from their site states: "Spamhaus tracks the Internet's  Spammers, Spam Gangs
and Spam Services, provides dependable realtime  anti-spam protection for Internet
networks, and works with Law  Enforcement to identify and pursue spammers
worldwide."  EarthLink  blocks mail from all known major sources of spam.

http://www.us.sorbs.net/lookup.shtml
Info from their site states: "Users of dynamically assigned IP  addresses, please
note that SORBS is not identifying you as a  spammer. SORBS is identifying you as a
dynamic IP address user,  nothing more, nothing less."  EarthLink blocks all known
dynamic  space from sending directly to our mail servers.  Dynamic users  should be
sending their mail out through their ISP's static outbound  mail servers, or their
company's static outbound mail server.

Other spam databases to determine if your mail server IP has spam  issues:
www.dnsstuff.com
http://www.moensted.dk/spam/

If your IP is not on any of these lists, is not dynamic, is not an  open
relay/proxy/zombie, please reply back to  blockedbyearthlink@abuse.earthlink.net
with  "BLOCKED <insert IP>" in  the subject line with the IP inserted.  
Blockedbyearthlink@abuse.earthlink.net does not block any mail sent  to it, so we
are asking for your mail to be sent to us in this format  to help us sort out spam
from legitimate reports.  All reports sent  to this address, not using this format
will receive this auto  response.  This process will allow us minimize the amount of
time to  resolve any blocking issues.

Thank you for your cooperation,
EarthLink Abuse