3 Messages


90 Points

Friday, March 10th, 2023 7:08 PM

Blocked E-mails - Blacklisted by SpamhausZen

I have been having e-mail issues for several months; email doesn't go through, goes directly to customer's spam folder etc.

Discovered this AM that SpamhausZen has blacklisted my IP.  Their site indicated that I can get this lifted when I have identified and corrected the problem.  Evidently my e-mail is flagged for spam.  FYI I do not send any promotional materials or anything like it (I know that doesn't mean much but had to be said).  I have no idea how to check, I wouldn't recognize a problem if it was staring me in the face.

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Brand User

8.4K Messages


123.6K Points

3 months ago


Sometimes, on shared hosting where many customers use the same email servers, they get detected as contributing to spam and unnecessarily get blacklisted by a few recipient email servers and RBLs. We do have a system in place that monitors our mailout server IPs for their reputation at RBLs that sends out reports periodically. Our Network Operations team rotates the blocked IPs automatically and that should resolve any blocks our servers may have, given time. We do recommend trying to resend the bounced emails.


If you're receiving a bounceback, you can copy and paste that here for me so I can get the specific issue reported.