One of our servers, mail.secure-by-design.com was blacklisted by spamhaus.org.  As soon as we became aware of the problem, we worked with our suppliers and spamhaus to get removed from the blacklist. They removed us from the list at approximately 2:30 PM (PST).  Due to the automtaic nature of such lists, we were not notified by spamhaus when this occurred.

As far as I can tell, it was not because of any email from our server or from our customers. In this case, it seems to be “Collateral Damage”, as spamhaus listed a block of 62 IP addresses, including 3 that are assigned to us.

I apologize for any inconvenience, and I am researching options of detecting this class of problem in the future.

This entry was posted on Tuesday, November 23rd, 2010 at 12:23 am and is filed under Announcements, Support. Both comments and pings are currently closed.