dyndns mailhop relay SBS 2003 - IP BLACKLISTED

I have a client that has a SBS 2003 Server running Exchange.  They have a static IP with AT&T.  The IP keeps getting blacklisted and we are unabel to send email to certain domians.  I have configured a smarthost on the Exchange server to try and relsove this, but we continue to get blacklisted.  I have scanned every PC on the network and the server and they come back clean.  I have had it with this thing!

Has anyone successfully used the the dyndns mailhop relay program to get by this issues?  Will this product enable our Exchange server to be able to send and receive email to anyone even though our IP keeps getting blacklisted?

I really need some help on this one.  I need to get this resolved ASAP!

500 POINTS for this question.

HELP!!!!

Thx

Shawn
sc_pantherfanAsked:
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EL-SHIMYCommented:
Hi There...
i had the same problem (same case SBS 2003 ) ... but i buy MailHop Outbound from dyndns and it easy to install . and work excellent ..


SHIMY
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Jerry SolomonNetwork  AdministratorCommented:
Here are the instructions from the DynDNS community KB on how to set it up.. I also used it successfully for a short period during an office move.

http://www.dyndns.com/support/kb/mail_servers_and_mailhop_outbound.html
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EL-SHIMYCommented:
Hi there..

Before you buy you must know the max outbound mail traffic for example if you have 400 per/day you should buy 3 Relays (each Relay give you 150 mail per day)
And you can add more Relays any time upon your needs.

and this is how you configure with exchange 2003 on SBS 2003...

Go to "Start/All Programs/Microsoft Exchange" and click on "System Manager".

Expand the "Connectors" item.

By default, Exchange uses SMTP for outbound connections, so you should find an "Internet Mail SMTP Connector" already there. Right click on it and select "Properties".

On the "General" tab, select "Forward all mail through this connector to the following smart hosts" and enter "outbound.mailhop.org" in the field below.

On the "Advanced" tab, click on the "Outbound Security" button to get to "Outbound Security" dialog box.

By default, exchange sets up security to use "Anonymous Access". Change this to "Basic authentication (password is sent in clear text)" then click the "Modify" button, enter your DynDNS username and password, and click "OK".

Back at the "Outbound Security" dialog box, enable "TLS Encryption" and click "OK".

SHIMY
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sc_pantherfanAuthor Commented:
DId you purchase Customs DNS from them or just mailhop relay?
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sc_pantherfanAuthor Commented:
i purchased the mailhop and changed my MX records with directnic.  How long does it take for the exchange server to be able to send email through the new smarthost.  I have messages queued up but they are not going out.  It has been about 10 minutes.  Also checked DYNDNS page and they say that my MX records are configured correctly.
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Jerry SolomonNetwork  AdministratorCommented:
The mailhop starts working immediately, as soon as you change the settings. If th eemails aren't going out, check all the settings again.You do not need custom DNS, just the mailhop.

I saw another expert pasted in the instructions after I submitted the link, but I prefer to link directly to the source:
http://www.dyndns.com/support/kb/mail_servers_and_mailhop_outbound.html

Triple-check every step.
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