We are an Email Service Provider, and one of our shared IP addresses is consistently being granted a negative reputation by Symantec. I have submitted our IP for investigation several times, each time our reputation is cleared, but within a few hours we're back on the negative list.
We have many clients who rely on the reputation of this Shared IP, and I believe that our presence on any blacklists is a false positive. We are actively removing any clients who may be hitting spam traps or practicing poor list hygeine from this IP, in order to optimize the reputation of this shared IP.
Our users are contractually required to only email contacts who have specifically opted in to receive email. We immediately remove hard bounces from any sending lists, and address any abnormal complaint rates immediately. Our emails are all CAN-SPAM compliant.
Please advise as to what action we can take to remove ourselves from any blacklists. Thank you.