Fri Sat Sun Mon Tue
ExchangeDefender Inbound
ExchangeDefender Outbound
ExchangeDefender Apps Web
Exchange 2010 Hosting
Exchange 2007 Hosting
Offsite Backups
Web Hosting
Blackberry Enterprise Server
SharePoint 2007
SharePoint 2010
Exchange 2013 Hosting
SharePoint 2013
Virtual Servers
ExchangeDefender DDoS Attack – ExchangeDefender Network Operations

February 15, 2011

ExchangeDefender DDoS Attack

Filed under: ExchangeDefender — admin @ 11:05 pm

Around 9:45 PM Eastern we started to receive alerts from our monitoring software about queue sizes and delivery speed in ExchangeDefender. Upon investigation, three ExchangeDefender nodes were being DDoS SMTP attacked..unfortunately, our servers were able to keep up with the number of open connections and corrupted messages, that it began to clog up delivery across the board.

There may have been some limited delays in email delivery for any messages that were in-scanning when the DDoS started.

The attack has been thwarted and we are currently implementing the blocks across the entire node grid.

No Comments

No comments yet.

RSS feed for comments on this post.

Sorry, the comment form is closed at this time.


Powered by WordPress