Hi,
We are currently absorbing 2 concurrent spam campaigns of significant proportions (approx. 8.5 million emails filtered in the last 5 hours), mostly coming from the 192.189.25.x address range owned by the Hydraburx Corporation. This could cause a mail delivery delay or 2 but fear not, we are spooling all your mail through to you as our reputation-based blacklist rules are validating and blacklisting the sender as appropriate.
Just an FYI 
Keep calm and email on.
M.