Late yesterday one of the Saasu servers was listed on the Spamhaus Block List (”SBL”). Spamhaus is a blacklist provider used for anti-spam protection. The blacklisting has since been removed but emails to some of your customers sent using Saasu may have been rejected during this period.

Spamhaus blacklisted a range of Server addresses (IP Addresses) in the big cloud hosting companies including Rackspace and Amazon Web Services (one of our host companies). Unfortunately Saasu was caught by the fact that one of our servers had a similar server IP address to one the spammer was using.

What was Saasu’s response?

Saasu notified Spamhaus that our server is legitimate and requested removal of the blacklist. We also notified Amazon Web Services to put pressure on Spamhaus which they did. Spamhaus removed the IP address from the blacklist and then placed it on a lower risk list called the Policy Block List and later today also removed it from this list.

The time frame this occurred in was between UTC: 14 Oct 2009 2:06AM – 15 Oct 2009 7:00AM
Timeshift for your zone: London+1 | Los Angeles-7 | Sydney+11

We are very sorry for the inconvenience this issue caused.

What do I need to do?

We will notify customers who are affected after complete review of the email logs. Saasu doesn’t store the content of emails sent we only store transactions so you will need to re-send them.

I still have more questions about this?

If you have an additional concerns or questions just get in touch by emailing service@saasu.com or via a support ticket at saasu.com/help