AT&T IP Blacklist
I run a small IT consulting firm and had a client (running Exchange 2007) who could not send emails to "bellsouth.net" addresses. His server would continuously delay the delivery and the client would always confirm that the recipient never obtained the emails. After exhausting AT&T's resources and their "Blacklist Inquiry and Removal" form, I never received any word from AT&T and my client's IP continued to be blacklisted.
I then advised my client that his best bet would be to change ISPs and in doing so, he would receive a new IP that I thought would be fresh and pristine.
After the installation of the new internet service, the new IP my client was given was actually on a blacklist called APEWS.org. I scolded the ISP for giving my client a blacklisted IP, and after much cat-and-mouse, the ISP gave my client another IP.
This second new IP seems to be clear of all blacklists EXCEPT for AT&T's blacklist. This was the origin of my problem all along and after two IPs, I still can't seem to be clear of AT&T's firing range.
I have filed a new IP inquiry on AT&T's blacklist site with this newest IP, but I don't expect to hear from them quickly.
Are there any other solutions I may be overlooking?
I then advised my client that his best bet would be to change ISPs and in doing so, he would receive a new IP that I thought would be fresh and pristine.
After the installation of the new internet service, the new IP my client was given was actually on a blacklist called APEWS.org. I scolded the ISP for giving my client a blacklisted IP, and after much cat-and-mouse, the ISP gave my client another IP.
This second new IP seems to be clear of all blacklists EXCEPT for AT&T's blacklist. This was the origin of my problem all along and after two IPs, I still can't seem to be clear of AT&T's firing range.
I have filed a new IP inquiry on AT&T's blacklist site with this newest IP, but I don't expect to hear from them quickly.
Are there any other solutions I may be overlooking?
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That's a great alternative, and I've thought about that for a moment. I was wondering, though, if there's any solution that takes care of the root of the problem. Is there anything else I can do?
If the client's new public IP is on AT&Ts blacklist to start, the only other option is to actually reach someone at AT&T
Is your client's IP blacklisted individually or is it part of a larger block being blacklisted?
Make sure that your client's Exchange server is not an open relay, and it is restricted to relay even from internal computers. Those who are allowed to relay, should be virus free. In Exchange's event log, it should tell you exactly which sites are the ones that added to the black list, usually those sites have a button you push to unblock - this is almost immediate. But you will be shortly put back on the list, if the site detects virus or malware traffic.
I can't imagine that you are getting 3 blacklisted IP's in a row.