Top Deliverability’s Blog
Spam Resource: Rackspace Hosted Exchange email service hit by ransomware attack
- December 7, 2022
- Posted by: Top Deliverability
- Category: Industry News Spam Resource
Al Iverson just issued a engaging post on Spam Resource:
Rackspace appears to have suffered a security issue related to their Hosted Exchange mailbox environment, starting on December 2nd. You can find more information here, here and here.From what I can tell, their Hosted Exchange systems make up only a small portion of the overall mailbox provider infrastructure hosted by Rackspace. Doing a quick check against the top 10 million domains suggests that the vast majority of mail traffic to Rackspace is handled by their non-Exchange infrastructure. Less than 1% of the Rackspace-hosted domains in the top 10 million domains point at the affected Exchange services. Rackspace’s MX records typically look like mx*.emailsrvr.com for non-Exchange-using domains, and mex*.emailsrvr.com for Hosted Exchange infrastructure-using customers.Sender impact is thus likely to be small — you’ll see a bit of bouncing at a handful of affected domains, as they’re not able to accept mail at this time. If you’re a mail/IT admin at an
Read more here: Rackspace Hosted Exchange email service hit by ransomware attack
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- Term: Mailbox Provider (MBP)
- Term: Infrastructure
- Term: Mail Exchange Record (MX)
- Term: Sender
- Term: Ransomware
- Term: Email Service Provider (ESP)
- Term: SpamAssassin
- Term: Simple Mail Transfer Protocol (SMTP)
- Term: Accelerated Mobile Pages (AMP)
- Term: Extended Simple Mail Transfer Protocol (ESMTP)
- Term: Domain Name System (DNS)
- Term: Deliverability