What does this Sorbs blacklist notification mean?

Hello,
If I check the Sorbs Database (http://www.us.sorbs.net/lookup.shtml) for our nail servers IP address the following error is recieved:

Netblock: 217.36.0.0/22 (217.36.0.0-217.36.3.255)
Record Created: Sun Jul 30 06:11:18 2006 GMT
Record Updated: Sun Jul 30 06:11:18 2006 GMT
Additional Information: Dynamic/Generic IP/rDNS address, use your ISPs mail server or get rDNS set to indicate static assignment.
Currently active and flagged to be published in DNS

Does anyone know what I need to do? Will this affect any of our mail delivery?

Thanks!
JohnAtkinson1Asked:
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Jan SpringerConnect With a Mentor Commented:
Sorbs is indicating that your network block is listed as dynamic and has no inverse DNS.  Servers that use the SORBS RBL will block emails from your mail server if your address space is listed.

To correct this issue, ask your ISP to configure matching forward and inverse DNS for your mail server IP address.
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JohnAtkinson1Author Commented:
Thanks for the information/solution. Whether BT will understand the solution is another matter....

Greatly appreciated.
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