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Will Changing My IP get me off spamhaus and CBL blacklists?

Please help me. I am a web designer who also does the IT for an insurance company. (I have NO experience in the IT field, and until recently NO PC experience. I switched when my Mac crashed 4 months ago.) My boss has a distribution list full of insurance agents (10K+) to which he sends out a weekly newsletter. GoDaddy, through which he his two websites hosted, doesn't allow for more than a certain amount of emails to be sent out each month. My boss is extremely frugal and refuses to buy more SMTP relays from GoDaddy. So I found him a program that allows us to use the computers here as a SMTP server, which worked fine for a few days then we got our IP blacklisted. We were able to get off of some of them but others had us listed because the bigger lists still had us listed. I figure if I could get a new IP address, I could avoid being blacklisted by splitting the distrubution lists and having him send emails less frequently. I contacted my ISP and i have a dynamic IP. I should also mention that we were taken off of both list for about 3 days then relisted.

Public Comments

1. Being blacklisted by spamhaus or other was a result of someone reporting you to them. Regardless of the number of emails sent spamhaus doesn't care until your reported. Even if you change your ip address you are still going to get blacklisted. I'd advise working with spamhaus to get off the list.
2. Changing your internet service provider would get you off the blacklist.
3. If it's still registered under the same domain name, it likely won't help. Most email blacklists will block based on domains, (ie: blacklisting all hotmail.com traffic). Is your IP static? In addition to blocking for abuse, many blacklists will block you if your SMTP server's IP is advertised as dynamic for security reasons (since SMTP can be used for evil, same reason many ISP's will block port 25 from non-business customers).